# Dicuibio NLU High-Activity Cold-Chain Transdermal Serum White Paper ## Official English Release ### From Ingredient-Led Skincare to Evidence-Led Skincare **Products covered** - Dicuibio NLU Multi-Effect Hydrating Single-Use Serum, also referred to in Chinese communication as the “Water-Glow White Ampoule” - NLU Firming Renewal Single-Use Serum, also referred to in Chinese communication as the “Sculpting Black Ampoule” **Core system** Cold-chain storage, refrigerated single-use ampoules, Simoyin™ biomimetic liposomal membrane structure, in vivo Raman path observation, 28-day human efficacy testing, and day-night divided skincare. **Daily use concept** Use the Water-Glow White Ampoule in the morning. Use the Sculpting Black Ampoule at night. --- ## Publication Note Dicuibio NLU should not be understood as an ordinary room-temperature facial serum. A conventional serum is usually explained through ingredients, concentration, texture and price. NLU is built differently. Its logic starts before the product touches the skin. It begins with how the formula is stored, how high-activity ingredients are protected, how the delivery structure is organized, how the product signal is observed in skin, how the skin changes after continued use, and how the user can actually follow the routine every day. The product requirements may look demanding at first: 2–8°C refrigerated storage, a 5-month shelf life, cold-chain delivery, refrigerated single-use ampoules, and a morning-evening divided routine. These are not separate marketing points. They are parts of one product system. This white paper explains that system. All terms such as “high-activity,” “transdermal,” “delivery,” “path observation,” “Raman testing,” and “sensitive skin testing” are used in the context of cosmetic product research, cosmetic efficacy evaluation, and skincare use. They should not be read as medical treatment claims, transdermal drug delivery claims, aesthetic medicine claims, or absolute efficacy promises. Raman data and human efficacy data should always be understood together with the test conditions, subject groups, use cycle and individual skin differences. --- ## Contents 1. Why efficacy skincare is moving beyond ingredient lists 2. Why Dicuibio NLU is not an ordinary room-temperature serum 3. Cold-chain short shelf life: managing product condition before skin contact 4. Refrigerated single-use ampoules: not a packaging trick, but a product requirement 5. Minimalist formulation: delivery-focused products cannot overload the formula 6. Simoyin™: a biomimetic carrier structure for large active ingredients 7. Raman path observation: moving beyond “it feels absorbed” 8. 28-day human efficacy testing: technology must return to skin condition 9. Water-Glow White Ampoule and Sculpting Black Ampoule: why day-night use makes sense 10. How users should use it, and how channels should explain it 11. Communication boundaries: what can be said and what should not be said 12. The real threshold of high-activity cold-chain transdermal serums 13. From brand cold storage to the home refrigerator 14. Skin barrier, liposomes and Simoyin™ 15. How to read the data behind the two ampoules 16. A practical 28-day use cycle 17. What channels are really selling 18. How public research should be used 19. Real skincare scenarios 20. Common misunderstandings 21. The hidden cost behind a high-activity serum 22. Why this white paper should not be reduced to a sales brochure 23. A long-term content direction for NLU Appendices: data summary, user Q&A, use records, cold-chain card, and standard wording --- # 1. Why Efficacy Skincare Is Moving Beyond Ingredient Lists Over the past few years, skincare consumers have become much more informed. Many people now read ingredient lists before buying a serum. They know hyaluronic acid, collagen, peptides, ceramides, niacinamide and vitamin C. They may not understand every technical detail, but they know enough to ask better questions. This is good for the industry. It has pushed skincare away from pure advertising and back toward formulation, testing and product performance. But ingredient education has also created a new problem. When many brands can talk about the same ingredients, the ingredient list alone no longer explains the difference. Two products can both contain collagen. Two formulas can both contain hyaluronic acid. Many serums can talk about hydration, repair, firming and sensitive skin. The real question becomes: what is behind the ingredient list? A high-activity serum needs to answer more than “what is added.” It needs to answer how the ingredient is protected before use, how it is carried in the formula, how it interacts with the skin interface, whether its product signal can be observed under test conditions, and whether continued use leads to measurable changes in skin condition. This is why efficacy skincare is moving from ingredient competition to evidence-chain competition. An evidence chain is not just a pile of reports. It is a sequence of product decisions that can be explained clearly. Why does the product need refrigeration? Why is the shelf life short? Why is it made as a single-use ampoule? Why does the formula avoid unnecessary complexity? Why is Simoyin™ used? What does Raman observation actually show? What do the 28-day human efficacy results mean? If each answer connects naturally to the next, the product becomes a system rather than a collection of claims. Dicuibio NLU is valuable because it is designed as a system. Cold-chain storage, short shelf life, refrigerated single-use ampoules, Simoyin™, Raman path observation, 28-day human efficacy testing and day-night divided use are not random labels. They all serve the same larger question: how should high-activity ingredients be protected, carried, observed, tested and used? A technical skincare brand does not need louder words. It needs a clearer line of reasoning. --- # 2. Why Dicuibio NLU Is Not an Ordinary Room-Temperature Serum Most facial serums are designed for convenience. Users buy them, place them on a dressing table or in the bathroom, open and close the bottle repeatedly, and use the same bottle for weeks or months. That is normal for many skincare products. NLU is different. It asks the user to refrigerate the product at 2–8°C, use it within a short shelf-life period, take out one ampoule each time, finish it after opening, and follow a morning-evening routine. If judged only by convenience, NLU is more demanding than an ordinary serum. But convenience is not the main objective here. The objective is to deliver a high-activity product in a more controlled condition. The reason lies in the product itself. NLU contains high-activity ingredients such as recombinant collagen, and it also relies on the phospholipid biomimetic structure within the Simoyin™ system. Protein-based active ingredients are sensitive to storage conditions. Phospholipid structures also need protection against oxidation, hydrolysis, aggregation, fusion and structural instability. Refrigeration is not a decorative luxury. It is a way to help keep the product closer to the intended state before it reaches the skin. The 5-month shelf life should be read in the same way. It is not a marketing number created to pressure users. It is linked to ingredient characteristics, formulation design, packaging format, refrigerated storage and stability testing. Ordinary skincare products often emphasize how long they can sit on a shelf. A high-activity cold-chain serum is more concerned with whether the user applies the product during a suitable period. The same logic applies to single-use ampoules. High-activity serums do not benefit from repeated opening, air exposure, finger contact and temperature changes. One ampoule, one use, one clear amount. It reduces uncertainty after opening and keeps the use path cleaner. In this sense, NLU is not an ordinary serum placed in the refrigerator for a premium feeling. Refrigeration, short shelf life, single-use packaging, cold-chain delivery and day-night use are all part of the product’s structure. --- # 3. Cold-Chain Short Shelf Life: Managing Product Condition Before Skin Contact Cold-chain storage is often misunderstood as a luxury label. For NLU, cold-chain storage is not about image. It is about condition management. The product is stored at 2–8°C because it contains ingredients and structures that should not be treated like ordinary room-temperature formulas. Recombinant collagen and other protein-based high-activity ingredients can be affected by long-term heat exposure. Phospholipid biomimetic structures in the Simoyin™ system also need a more controlled environment. Refrigeration helps reduce unnecessary instability before the product touches the skin. A simple comparison may help. A fresh egg is kept in the refrigerator to preserve its original state. A salted egg lasts longer because its original state has been changed. NLU is closer to the fresh egg logic. It is not trying to sit on a shelf for as long as possible. It is trying to preserve the state of the active ingredients and the biomimetic lipid structure within a defined refrigerated period. The 5-month shelf life is part of this product discipline. It tells the user that NLU should be purchased and used according to a reasonable cycle. It is not a product designed for long-term stockpiling. Cold-chain management also extends beyond the brand warehouse. After production, the product enters cold storage. It then moves through packing, shipping, delivery and user receipt. Each step involves time, distance and temperature. Dicuibio uses cold-chain packing and high-speed cold-chain delivery to shorten the time between the brand cold-storage system and the user’s refrigerator. But the cold chain does not end at delivery. Once the product is received, the user needs to place it in the refrigerator as soon as possible. It should not be left at the door, inside a car, on an office desk, beside a window, or in a bathroom. It should not be frozen. The correct daily storage place is the refrigerator compartment, not the freezer. This is also why NLU does not encourage stockpiling. Buying closer to the actual use period is more consistent with the product design. Buying many boxes and keeping them at home for a long time increases uncertainty: refrigerator temperature fluctuation, frequent handling, travel, relocation, forgotten products and storage mistakes. The same principle explains why non-quality-related returns must be handled carefully. Once a cold-chain product has left the brand’s controlled system, its temperature history at the user end cannot be verified by appearance. A box may look unopened, but that does not prove it was kept at 2–8°C. Reselling a returned cold-chain product would pass an unverifiable temperature risk to another user. For this type of product, returned items without quality issues should not re-enter the sales chain. The rule is simple: a high-activity product should be stored seriously, purchased according to the use cycle, and applied as instructed. --- # 4. Refrigerated Single-Use Ampoules: Not a Packaging Trick, but a Product Requirement Many single-use ampoules are marketed as premium packaging. NLU uses single-use ampoules for a more practical reason. Repeated opening creates uncertainty. Each opening brings air exposure. The bottle mouth may contact the hand or environment. The product may sit at room temperature for longer than expected. A conventional formula can often handle this through a mature preservative and stabilizing system. But NLU is trying to maintain a high-activity formula, minimalist formulation and a clearer Simoyin™ delivery path. It should not casually accept repeated exposure as a small issue. Single-use ampoules reduce that uncertainty. Each ampoule is opened once and finished once. The amount is clear. The user does not need to guess how much to apply. This is helpful because many people use serums inconsistently: too little one day, too much another day. Too little may weaken the intended experience. Too much may increase burden on the skin. A single-use format makes daily use more stable. The format also supports the minimalist formula. The less the product depends on a complex preservative and auxiliary system, the more important it becomes to reduce exposure through packaging and use design. Refrigeration, short shelf life and single-use packaging work together. For users, the instruction is straightforward: keep the unopened ampoules refrigerated, take out one ampoule before use, open it, apply it, and finish it. Do not leave an opened ampoule for the next day. The format is not simply about looking refined. It is part of the product engineering. --- # 5. Minimalist Formulation: Delivery-Focused Products Cannot Overload the Formula In skincare, a long ingredient list often gives consumers a sense of value. More ingredients, more stories, more functions. But a delivery-focused serum should be judged differently. If a product emphasizes transdermal delivery, it must answer two questions. Can it deliver? And what exactly is being delivered? If a formula claims delivery while containing many preservatives, fragrances, thickeners, emulsifiers, solvents and texture modifiers, the explanation becomes less clean. Are the target active ingredients being carried more effectively, or are unnecessary non-target variables also being introduced into the discussion? NLU’s minimalist formulation is not about claiming that fewer ingredients are always better. It is about focus. The formula is built around the ingredients and structures that matter most: recombinant collagen, sodium hyaluronate, distearoyl butyl choline phosphate, and the Simoyin™ biomimetic lipid structure. A cleaner formula helps keep the product story clear. Users can understand what the product is trying to do. Channels can explain it without turning the ingredient list into a scattered sales script. The formulation resources are directed toward high-activity ingredients, carrier structure and skin-interface compatibility. Minimalist does not mean easy. A formula still needs stability, texture, skin feel and compatibility with later skincare steps. The Water-Glow White Ampoule should work in the morning before sunscreen and makeup. The Sculpting Black Ampoule should work at night without feeling overly heavy. A restrained formula still needs to perform in daily life. For sensitive skin users, fewer unnecessary variables can also be meaningful. It does not mean the product is guaranteed to suit everyone. But it helps explain why NLU places its focus on target active ingredients and a defined delivery structure rather than on a long list of decorative formula claims. --- # 6. Simoyin™: A Biomimetic Carrier Structure for Large Active Ingredients Simoyin™ is not a single ingredient. It is not a simple “faster absorption” concept either. In Dicuibio NLU’s technical language, Simoyin™ is a liposomal biomimetic cell-membrane structure developed by Suzhou Dicuibio Technology Co., Ltd. It is designed for cosmetic high-activity ingredients, especially large active ingredients such as recombinant collagen and sodium hyaluronate. It uses the registered cosmetic new ingredient distearoyl butyl choline phosphate as the core material, together with a specific formulation system and active ingredients, to build a more stable carrier environment, a more skin-lipid-compatible interface, and a clearer observable transdermal delivery path. To understand Simoyin™, start with the skin. The outermost layer of the skin is not a sponge. It is closer to a brick wall: corneocytes are the bricks, and intercellular lipids act like mortar. The skin barrier is meant to reduce water loss and block unwanted external substances. Large water-soluble active ingredients do not simply pass through this structure on their own. Simoyin™ does not try to force large molecules through the skin barrier. It first places the active ingredients into a biomimetic lipid structure that is closer to the skin’s lipid environment. This gives the active ingredients a more suitable carrier and creates a better interface with the skin. Its technical source has a clear background. In 2012, Professor Yu Xifei published research in *Nature Materials* on polyvalent choline phosphate as a universal biomembrane adhesive. This work connected choline phosphate structures with biomembrane interface interactions and provided a scientific basis for later biomimetic membrane materials and liposomal carrier systems. In 2019, the invention “a liposome, preparation method thereof, liposome assembly and cargo-loaded liposome complex” was granted as a Chinese invention patent, patent number ZL201910847775.5. The transformed ingredient, distearoyl butyl choline phosphate, has completed cosmetic new ingredient filing under registration number Guozhuang Yuan Bei Zi 20250081. The key is not only that Simoyin™ wraps active ingredients. It also helps the carrier structure “speak the lipid language” of the skin. Compared with common PC lipids, CP lipids reverse the position of the choline group and phosphate group. This changes the charge orientation and spatial arrangement of the lipid head group. In simpler terms, the surface of the Simoyin™ biomimetic lipid microvesicle is not just an external shell; it is a structure that can better match the skin lipid environment. This is sometimes explained as a “molecular handshake.” The skin’s intercellular lipids have their own charge arrangement. The Simoyin™ biomimetic lipid microvesicle also carries corresponding N+ / O- ion-pair structures. When the two come close, dipole interactions can help the vesicle approach the skin lipid layer and form better compatibility, embedding and cooperative diffusion. This does not mean the skin actively recognizes or absorbs the carrier like a drug. It does not mean the ingredient reaches the dermis. It means the structure is more compatible with the skin lipid microenvironment and can help create a clearer observable delivery path under cosmetic test conditions. Simoyin™ should always be explained with restraint: stable carrying, skin-lipid microenvironment compatibility, and observable delivery path. Not medical delivery. Not forced penetration. Not aesthetic procedure replacement. --- # 7. Raman Path Observation: Moving Beyond “It Feels Absorbed” “Absorbs well” is one of the most common skincare phrases. Usually, it means the texture feels light, spreads easily, does not feel sticky, and does not pill. These are useful sensory experiences, but they do not prove that a product signal has followed an observable path in the skin. NLU uses in vivo Raman testing to move beyond this vague language. Raman spectroscopy can observe changes in product-related spectral signals at different skin depths under test conditions. It is not a clinical absorption test. It is not a transdermal drug delivery test. It is a cosmetic research method used to observe time- and depth-related distribution changes in product signals. For the Water-Glow White Ampoule, the test showed a relative penetration rate of 4.58% at 2 hours, with a maximum detection depth of 60 μm. At 4 hours, the relative penetration rate was 8.21%, with a maximum detection depth of 100 μm. For the Sculpting Black Ampoule, the test showed a relative penetration rate of 3.25% at 2 hours, with a maximum detection depth of 30 μm. At 4 hours, the relative penetration rate was 7.67%, with a maximum detection depth of 110 μm. The point is not to use 100 μm or 110 μm as a dramatic headline. The point is the time-related change. The signal distribution changes from 2 hours to 4 hours. This suggests that, under the test conditions, the product signal was not simply sitting on the surface. Raman data should be described carefully: in vivo Raman testing observed that the product characteristic signal showed a clearer deep penetration path over time. It should not be described as “reaching the dermis,” “acting in the dermis,” “medical-grade delivery,” or “aesthetic medicine-level penetration.” Raman observes a path. It does not replace human efficacy testing. In NLU’s evidence chain, Simoyin™ explains the carrier structure, Raman observes the product signal path, and human efficacy testing returns the discussion to skin condition after continued use. --- # 8. 28-Day Human Efficacy Testing: Technology Must Return to Skin Condition Technology must eventually return to the skin. A product can talk about cold chain, Simoyin™ and Raman data, but users care about skin condition: hydration, glow, stability, elasticity, firmness, fine lines, redness and the appearance around the eyes. Both NLU products completed 28-day human efficacy testing on 33 subjects with sensitive skin. No adverse reactions were recorded during the test period. For the Water-Glow White Ampoule, after 28 days of continuous use, the test results showed: - Stratum corneum water content increased by 37.53% - TEWL decreased by 22.07% - Gloss increased by 33.82% - Elasticity R2 increased by 26.00% - Firmness R0 decreased by 11.83% - Wrinkle area ratio decreased by 15.74% - Red area a* value decreased by 13.92% - Under-eye wrinkle score decreased by 13.04% These results should not be reduced to “hydration.” Water content and TEWL relate to skin moisture condition. Gloss relates to visible daytime skin quality. Elasticity, firmness and wrinkle-related indicators bring the product beyond basic hydration. Red area a* value and under-eye wrinkle score connect it to daytime stability and visible detail. For the Sculpting Black Ampoule, after 28 days of continuous use, the test results showed: - Stratum corneum water content increased by 47.37% - TEWL decreased by 25.33% - Gloss increased by 29.59% - Elasticity R2 increased by 17.86% - Firmness R0 decreased by 13.92% - Wrinkle area ratio decreased by 12.30% - Redness score decreased by 15.38% - Under-eye wrinkle score decreased by 21.43% This product should not be reduced to a “collagen serum.” Its data fits better with night-time elasticity, firmness, repair feeling and youthful appearance management. Water and TEWL provide the base; elasticity, firmness, wrinkle area and under-eye data support the youthful appearance direction; redness score links it to overnight stability. These results come from specific test conditions, a defined subject group and a defined use cycle. They do not mean every user will experience the same level of change. A responsible interpretation is: under the test conditions, after 28 days of continuous use, multiple skin-condition indicators showed improvement, and no adverse reactions were recorded during the test period. This boundary does not weaken the product. It makes the claim more trustworthy. --- # 9. Water-Glow White Ampoule and Sculpting Black Ampoule: Why Day-Night Use Makes Sense NLU turns a complex system into one simple routine: Water-Glow White Ampoule in the morning. Sculpting Black Ampoule at night. This is not just a convenient pairing. It follows the different needs of the skin throughout the day. In the morning, the skin needs to return to a hydrated, fresh and stable condition. It may face commuting, air conditioning, sun exposure, sunscreen and makeup. The user notices whether the skin feels dry, whether makeup sits well, whether the face looks dull, and whether redness or under-eye lines look obvious. The Water-Glow White Ampoule fits this morning scenario. It is better understood as a daytime hydration, glow, pre-makeup and stability serum rather than a simple hydrating product. At night, the skin carries the day’s fatigue, dryness, expressions, environmental stress and visible tiredness. Many users notice under-eye lines, facial looseness, redness, dullness and lack of bounce when they look in the mirror at night. The Sculpting Black Ampoule fits this night scenario. “Sculpting” should not be confused with an aesthetic medical procedure. In this product context, it refers to night-time elasticity, firmness, repair feeling and youthful appearance management. A good routine should not force users to understand every technical detail every day. The routine should be simple enough to follow. Morning white ampoule. Night black ampoule. Refrigerate. Open once. Finish once. Observe over a 28-day cycle. That is how a technical skincare system becomes a daily habit. --- # 10. How Users Should Use It, and How Channels Should Explain It Technical products often fail because they are not explained clearly. NLU has many elements: cold chain, short shelf life, single-use ampoules, collagen, sodium hyaluronate, Simoyin™, Raman testing, human efficacy testing, sensitive skin subjects and day-night use. If each is explained separately, the user may hear many terms but still not understand the product. The explanation should follow the actual product logic. First, explain why it is not an ordinary serum. NLU is a high-activity cold-chain transdermal serum system that requires 2–8°C refrigeration, short shelf life, single-use ampoules and cold-chain delivery. Second, explain why. It contains protein-based high-activity ingredients and a phospholipid biomimetic structure in the Simoyin™ system, both of which benefit from controlled storage before use. Third, explain Simoyin™ in plain language. It is a biomimetic carrier structure that gives active ingredients such as recombinant collagen and sodium hyaluronate a more stable carrier environment and a more skin-lipid-compatible interface. Fourth, explain Raman. Raman does not prove dermal delivery. It observes product characteristic signals over time under test conditions. Fifth, explain human efficacy. Both products completed 28-day human efficacy testing on 33 sensitive skin subjects, with no adverse reactions recorded during the test period. Finally, explain use. Refrigerate after receipt. Use the white ampoule in the morning and the black ampoule at night. Finish each ampoule after opening. Do not stockpile excessively. Observe over a cycle. For channels, the key is not to memorize technical terms. The key is to avoid saying the wrong thing. Cold chain is condition management, not “100% activity guarantee.” Simoyin™ is biomimetic carrying and interface compatibility, not forced penetration. Raman is path observation, not dermal proof. Sensitive skin testing is a reference, not a blanket promise. Clear communication reduces after-sales problems and protects long-term trust. --- # 11. Communication Boundaries: What Can Be Said and What Should Not Be Said The more technical a product is, the more carefully it should be described. NLU can talk about 2–8°C refrigerated storage, 5-month shelf life, cold-chain delivery, refrigerated single-use ampoules and product condition management. It should not claim that cold chain guarantees 100% preservation of activity, doubles efficacy, or makes the product automatically more effective. Simoyin™ can be described as a liposomal biomimetic cell-membrane structure based on distearoyl butyl choline phosphate. It can be described in terms of stable carrying, skin-lipid microenvironment compatibility and observable transdermal delivery path. It should not be described as breaking through the skin barrier, reaching the dermis, medical-grade delivery or drug-level penetration. CP lipids, choline phosphate lipids, dipole interactions and membrane compatibility may be used in R&D, training and technical materials. For consumer-facing communication, they should be translated into simpler language: closer to the skin lipid microenvironment, friendlier skin-interface compatibility, and clearer observable delivery path. Raman can be used to discuss product characteristic signal changes over time under test conditions. It should not be used to claim dermal action, dermal infusion or aesthetic medicine-level delivery. Human efficacy data can be used to say that under test conditions, multiple skin-condition indicators improved after 28 days of continuous use, and no adverse reactions were recorded during the test period. It should not be used to claim universal efficacy, instant effect, permanent reversal, treatment, or disease repair. Sensitive skin testing can be described as testing on sensitive skin subjects with no adverse reactions recorded during the test period. It should not be turned into “suitable for all sensitive skin” or “safe with eyes closed.” Boundaries are not weakness. They are part of trust. --- # 12. The Real Threshold of High-Activity Cold-Chain Transdermal Serums Dicuibio NLU is not trying to be a serum that looks unusual. It is trying to build a high-activity cold-chain transdermal serum system. Cold chain manages product condition before skin contact. Single-use ampoules reduce repeated opening and exposure. Minimalist formulation reduces unnecessary variables. Simoyin™ builds a biomimetic carrier structure for large active ingredients. Raman observes product signal paths. Human efficacy testing returns the discussion to skin condition after continued use. Day-night divided care turns all of this into a routine users can follow. That is the difference between NLU and an ordinary serum. An ordinary serum often answers: what ingredients are inside? NLU asks a longer set of questions: how are the ingredients protected, how are they carried, how do they approach the skin lipid environment, how is the path observed, how are results tested, and how can users apply it correctly every day? When these questions are connected, the product value becomes clearer. NLU is not the only possible answer in the market. But it is a useful example of where Chinese efficacy skincare is moving: away from ingredient slogans and toward product systems that can be stored, delivered, observed, tested and used with discipline. --- # 13. From Brand Cold Storage to the Home Refrigerator Cold chain is often discussed as logistics. For NLU, logistics is only one part of the story. The product passes through multiple stages: production, cold storage, packing, dispatch, transportation, delivery, receipt and home storage. For an ordinary room-temperature serum, most of these steps are invisible to the user. For NLU, the user must participate in the final step. The most common mistakes are simple ones. The package arrives, but the user is not home. The box stays at the door for hours. The user brings it to the office and refrigerates it only at night. The product is opened for photos before being stored. Or the user places it in the freezer instead of the refrigerator compartment. These are not small details for a cold-chain high-activity serum. A practical instruction card should say: refrigerate after receipt. Store at 2–8°C. Do not freeze. Do not leave at room temperature for long periods. Do not leave in a car, by a window, in a bathroom or on an office desk. Take out one ampoule before use. Finish it after opening. These plain instructions matter more than fancy language. High-activity products are protected through ordinary actions done correctly. --- # 14. Skin Barrier, Liposomes and Simoyin™ To explain Simoyin™, it helps to go back to the skin. The stratum corneum is a barrier. It reduces water loss and limits external substances from entering freely. The “brick and mortar” image is useful: corneocytes are the bricks, intercellular lipids are the mortar. Large active ingredients do not simply pass through this structure by themselves. This is why a suitable carrier matters. Liposomes and phospholipid vesicles have been widely studied as carrier structures because they can hold or stabilize active substances. In cosmetic products, the value lies in formulation stability, skin-interface compatibility and delivery path design. Simoyin™ brings this logic into the NLU product system. It uses distearoyl butyl choline phosphate, active ingredients and a specific formulation system to create a liposomal biomimetic cell-membrane structure. Its goal is not to force ingredients through the barrier, but to provide a more suitable carrier and interface. The CP lipid mechanism can be discussed in technical settings, but for most users the message should stay simple: Simoyin™ is closer to the skin lipid microenvironment, has friendlier skin-interface compatibility, and helps form a clearer observable delivery path. --- # 15. Data Is Not Decoration Data should not be used as decoration. It needs to help explain product meaning. For the Water-Glow White Ampoule, the hydration data is only the beginning. Water content increased by 37.53%, but TEWL also decreased by 22.07%. Together, they describe a better moisture condition. Gloss increased by 33.82%, which connects to visible daytime appearance. Elasticity, firmness, wrinkle area, red area a* value and under-eye wrinkle score make the product more than a simple hydrating serum. For the Sculpting Black Ampoule, hydration and TEWL provide the base, but the main story is night-time elasticity, firmness, wrinkle appearance, redness and under-eye condition. It is not merely a collagen serum. It is a night serum for elasticity, firmness, repair feeling and youthful appearance management. Data should be translated into daily language. TEWL means water loss. Gloss means visible skin condition. Under-eye scoring relates to small details users notice in the mirror. Redness scoring relates to stability. This translation does not weaken the data. It helps people understand it. --- # 16. A Practical 28-Day Use Cycle NLU is best observed over a cycle. On Day 1, the user should record the starting condition: dryness, tightness, redness, under-eye lines, makeup fit, facial fatigue and bounce. A simple photo under consistent lighting can help. From Day 3 to Day 7, focus on compatibility. Does the morning ampoule layer well under sunscreen and makeup? Does the night ampoule feel comfortable by the next morning? This is not the time to judge every wrinkle. It is the time to see whether the routine fits daily life. Around Day 14, users can start observing hydration, makeup fit, under-eye condition and redness. It is better to compare with Day 1 under similar lighting instead of relying on one day’s mood. By Day 28, users can make a more complete judgment: hydration, glow, elasticity, under-eye appearance, redness stability and night-time recovery feeling. Not every user will see the same changes. But a cycle gives the product a fairer chance than one or two uses. A simple record can include: hydration, makeup fit, glow, under-eye appearance, redness stability, night-time bounce, refrigeration compliance and morning-evening use compliance. This is not a laboratory record. It is a way to keep skincare judgment from becoming too emotional or random. --- # 17. What Channels Are Really Selling Channels are not only selling two ampoules. They are selling a way to understand high-activity skincare. A channel that cannot explain refrigeration will make the product look troublesome. A channel that cannot explain Simoyin™ will make the product sound mysterious. A channel that exaggerates Raman will create compliance risk. A channel that promises instant results will damage trust. The right channel should be able to explain the product in three minutes. Dicuibio NLU is not an ordinary room-temperature serum. It is a high-activity cold-chain transdermal serum system. It uses refrigeration, short shelf life and single-use ampoules to manage product condition. It uses Simoyin™ to build a biomimetic carrier structure for large active ingredients. It uses Raman testing to observe product signal paths. It uses 28-day human efficacy testing to return the discussion to skin condition. It uses a morning-white and night-black routine to make the system usable. That is enough for the first explanation. More technical details can be added only when the user wants to know more. --- # 18. How Public Research Should Be Used Public research can help explain the background, but it should not replace NLU’s own evidence. Skin barrier research helps explain why the skin is not an open sponge. Liposome research helps explain why lipid vesicles can act as carrier structures. Raman-related studies help explain why Raman spectroscopy can observe molecular signals in skin. Cosmetic efficacy claim regulations help set communication boundaries. Patent and new ingredient filing information help explain the source of Simoyin™ and distearoyl butyl choline phosphate. But none of these alone proves the final product effect. NLU’s value still depends on its own formulation, cold-chain system, Simoyin™ structure, Raman testing and human efficacy data. External materials provide context. Product data supports the product. Keeping this distinction clear prevents the white paper from becoming empty science storytelling. --- # 19. Real Skincare Scenarios A white paper should not stay inside the laboratory. In the morning, the user wants the skin to feel hydrated but not sticky. Sunscreen and makeup should sit well. The face should not look dry, dull or tired. This is where the Water-Glow White Ampoule fits. In an air-conditioned office, the skin may become tight by the afternoon. Hydration and TEWL data become meaningful here. The user may not know the term TEWL, but she understands the feeling of moisture not holding. After staying up late, the face may look dull, the under-eye area may look tired, and redness may be more visible. The morning ampoule helps the visible daytime state, while the night ampoule supports recovery, elasticity and stability. During seasonal changes, sensitive skin users often dislike too many variables. A focused formula, single-use ampoule and clear routine can help reduce confusion. But sensitive skin still varies from person to person, so local trial use is reasonable. At night, the user is not looking for an aesthetic procedure. She is looking for skin that feels more rested, more elastic and more stable over time. The Sculpting Black Ampoule should be read in that context. --- # 20. Common Misunderstandings “Refrigeration means it is more powerful.” No. Refrigeration manages product condition before use. “Short shelf life means the product is weak.” No. For NLU, short shelf life is product discipline. It encourages use within the intended period. “Single-use ampoules are just premium packaging.” No. They reduce repeated opening and support a cleaner formula and delivery path. “Simoyin™ is a new ingredient.” No. It is a biomimetic liposomal membrane structure built around specific materials, active ingredients and formulation logic. “Raman depth means dermal delivery.” No. Raman observes product characteristic signals under test conditions. It should not be described as reaching the dermis. “Sensitive skin testing means all sensitive skin users can use it freely.” No. It is a useful reference, not an absolute promise. “Buying more is always better value.” Not for NLU. It is better to buy according to the use cycle. These misunderstandings should be addressed before they become after-sales problems. --- # 21. The Hidden Cost Behind a High-Activity Serum The user sees the ampoule. The hidden system is larger. Cold-chain storage, cold-chain packing, cold-chain delivery, short shelf-life inventory management, single-use packaging, Raman testing, human efficacy testing, content education and customer service all carry cost. A conventional serum can often be stored, shipped and displayed more easily. NLU cannot be handled in the same way. The product is more demanding because the product logic is more demanding. This cost is meaningful only if it supports the system. Cold chain supports product condition. Single-use ampoules support cleaner use. Testing supports evidence. Education supports correct use. None of these should be treated as decorative. The visible product is small. The work behind it is not. --- # 22. Why This White Paper Should Not Be Reduced to a Sales Brochure A sales page can be short. It can say what the product is, what it does and how to buy it. A white paper has a different job. It needs to explain why the product is designed this way, what makes it different, what evidence supports it, what should not be overstated, and how users should actually use it. NLU needs this kind of document because the product is easy to oversimplify. If compressed too aggressively, it becomes “refrigerated tech serum,” “collagen ampoule,” or “transdermal black technology.” These phrases may sound convenient, but they lose the system. The white paper should be clear enough to be split into channel training, website copy, live-stream talking points, customer service answers and media articles. When separated, the logic should still remain consistent. That is the practical value of a white paper. --- # 23. A Long-Term Content Direction for NLU NLU should not keep inventing new stories. The main line is already clear: high-activity ingredients need condition management; delivery-focused products need a clean formula; Simoyin™ builds a biomimetic carrier structure; Raman observes the path; 28-day testing records skin condition; day-night use makes the system practical. Future content can grow from this line. A cold-chain article can explain why the product needs refrigeration. A Simoyin™ article can explain carrier structure. A Raman article can explain why “absorption” should not be judged only by texture. A 28-day article can explain how to observe skin changes. A customer-service card can explain storage, use and returns. More content should make the main line clearer, not more scattered. --- # Appendix A. Core Data Summary ## Water-Glow White Ampoule Test group: 33 sensitive skin subjects aged 30–49 Test period: 28 days No adverse reactions recorded during the test period After 28 days: - Stratum corneum water content increased by 37.53% - TEWL decreased by 22.07% - Gloss increased by 33.82% - Elasticity R2 increased by 26.00% - Firmness R0 decreased by 11.83% - Wrinkle area ratio decreased by 15.74% - Red area a* value decreased by 13.92% - Under-eye wrinkle score decreased by 13.04% ## Sculpting Black Ampoule Test group: 33 sensitive skin subjects aged 30–50 Test period: 28 days No adverse reactions recorded during the test period After 28 days: - Stratum corneum water content increased by 47.37% - TEWL decreased by 25.33% - Gloss increased by 29.59% - Elasticity R2 increased by 17.86% - Firmness R0 decreased by 13.92% - Wrinkle area ratio decreased by 12.30% - Redness score decreased by 15.38% - Under-eye wrinkle score decreased by 21.43% --- # Appendix B. Raman Path Observation Data Water-Glow White Ampoule: - 2 hours: relative penetration rate 4.58%, maximum detection depth 60 μm - 4 hours: relative penetration rate 8.21%, maximum detection depth 100 μm Sculpting Black Ampoule: - 2 hours: relative penetration rate 3.25%, maximum detection depth 30 μm - 4 hours: relative penetration rate 7.67%, maximum detection depth 110 μm Recommended wording: in vivo Raman testing observed that the product characteristic signal showed a clearer deep penetration path over time. Avoid: reaches the dermis, acts in the dermis, dermal infusion, medical-grade delivery, drug-level penetration. --- # Appendix C. Standard Definition of Simoyin™ Simoyin™ is a liposomal biomimetic cell-membrane structure developed by Suzhou Dicuibio Technology Co., Ltd. It uses distearoyl butyl choline phosphate as the core material, together with a specific formulation system and active ingredients such as recombinant collagen and sodium hyaluronate, to provide large active ingredients with a more stable carrier environment, a more skin-lipid-compatible interface and a clearer observable transdermal delivery path. --- # Appendix D. Practical User Instructions Refrigerate at 2–8°C after receipt. Do not freeze. Do not leave at room temperature for long periods. Do not store in a car, by a window, in a bathroom or on an office desk. Take out one ampoule before use. Use the Water-Glow White Ampoule in the morning. Use the Sculpting Black Ampoule at night. Finish each ampoule after opening. Do not stockpile excessively. Observe changes over a 28-day use cycle. --- # Appendix E. A Short Version for Frontline Communication Dicuibio NLU is not an ordinary room-temperature serum. It is a high-activity cold-chain transdermal serum system. It uses 2–8°C refrigerated storage, a 5-month shelf life, refrigerated single-use ampoules and cold-chain delivery to manage product condition before use. It uses Simoyin™ to provide recombinant collagen, sodium hyaluronate and other active ingredients with a more stable biomimetic carrier structure. It uses in vivo Raman testing to observe product characteristic signal paths, and 28-day human efficacy testing to evaluate skin-condition changes. Use the Water-Glow White Ampoule in the morning, the Sculpting Black Ampoule at night, and refrigerate the product properly after receipt.