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  • Why Is Oligopeptide-1 So Popular in Cosmetics? Dec 16, 2024
    In recent years, oligopeptide-1 has emerged as a standout ingredient in the cosmetics industry. This highly active skincare component has gained significant attention, appearing in numerous high-end formulations. But what exactly makes it so popular and effective?   What is Oligopeptide-1?   Oligopeptide-1, also called as tripeptide-1, is a small molecule composed of three amino acids, designed to mimic the body’s natural signaling peptides. Its unique structure allows it to penetrate deep into the skin and “communicate” with skin cells, activating repair and regeneration mechanisms.     The Key Benefits of Oligopeptide-1   Oligopeptide-1 has become a sought-after ingredient thanks to its wide-ranging skincare benefits:   Boosts Collagen Production As we age, collagen levels in the skin decline, leading to wrinkles and loss of elasticity. Oligopeptide-1 stimulates fibroblasts to produce collagen, helping to firm the skin and reduce fine lines.   Repairs the Skin Barrier It strengthens the skin’s natural barrier, improving resilience and protecting against environmental damage. This makes it especially beneficial for sensitive skin.   Accelerates Skin Healing Mimicking the effects of growth factors, oligopeptide-1 promotes faster cell turnover and repair, making it effective for reducing acne scars and addressing damaged skin.   Antioxidant and Anti-Inflammatory Properties Oligopeptide-1 combats free radical damage while soothing inflammation, helping maintain a calm and healthy complexion.   Why Are More People Choosing Products with Oligopeptide-1 ?   Effective Yet Gentle: Oligopeptide-1 works in harmony with the skin’s natural processes and is non-irritating, making it suitable for all skin types, including sensitive skin.   Backed by Science: Research has demonstrated that oligopeptide-1 significantly increases collagen production and improves skin quality, earning it credibility in the skincare world.     Versatile Benefits: Beyond anti-aging, it addresses multiple skin concerns, offering a comprehensive approach to skincare.     Oligopeptide-1 has become a favorite in the cosmetics industry due to its exceptional anti-aging, repair, and protective properties. It not only helps maintain youthful-looking skin but also addresses a variety of skin concerns. With its versatility and effectiveness, it’s no wonder oligopeptide-1 is celebrated as a powerhouse ingredient. Adding a product with oligopeptide-1 to your skincare routine could be your next step toward healthier, more radiant skin!   If you are interested in our products and want to know more details, please contact judyzhou@drop-bio.com.
  • Can Small-Molecule Peptides Really Reduce Wrinkles? Dec 13, 2024
      Small-molecule peptides have become a trending ingredient in skincare, often touted for their anti-aging benefits. But do they truly live up to the hype when it comes to reducing wrinkles? Let’s explore the science behind their effectiveness.   What Are Small-Molecule Peptides?   Small-molecule peptides are short chains of 2–10 amino acids with low molecular weight, making them easy to absorb through the skin. Once they penetrate the skin barrier, they act directly on the dermis. Common types include tetrapeptides, hexapeptides, and copper peptides, known for stimulating collagen production, enhancing skin elasticity, and providing antioxidant protection.   How Do They Work Against Wrinkles?   1.Stimulating Collagen Production Collagen loss is a key factor in wrinkle formation. Small-molecule peptides activate fibroblasts, boosting collagen synthesis to improve skin firmness and reduce fine lines and wrinkles.   2.Antioxidant Protection Free radicals can damage skin cells and accelerate aging. Small-molecule peptides have antioxidant properties that neutralize free radicals, reducing oxidative stress from UV exposure and pollution.   3.Relaxing Facial Muscles Some peptides, like hexapeptides, block nerve signals to relax facial muscles, effectively softening expression lines such as crow’s feet and forehead wrinkles.   Is There Scientific Evidence?   Studies show that consistent use of peptide-infused skincare products can visibly improve skin elasticity and smoothness within weeks. For instance, 0.1% tetrapeptide-1(0.1mg/mL DropPet® TR-1P) has a collagen-promoting effect, which has been found to significantly reduce crow’s feet and nasolabial folds. However, the effectiveness depends on factors like peptide concentration, formulation, and absorption. Poorly designed products may fail to deliver the desired results.     How to Choose Skincare with Small-Molecule Peptides?   1.Check the Ingredients: Look for clearly labeled peptides like tetrapeptides, hexapeptides, or copper peptides.   2.Prioritize Concentration: Higher peptide concentrations typically yield better results.   3.Be Consistent: Long-term use, combined with good skincare habits like sun protection and hydration, enhances effectiveness.   Conclusion   Small-molecule peptides show promising results in reducing wrinkles, particularly by stimulating collagen production and combating oxidative stress. While they’re not a “magic cure,” they are a valuable tool for slowing down the signs of aging. With the right product and consistent use, small-molecule peptides could become your go-to ally in the fight against wrinkles.     Your skin is in a race against time—small-molecule peptides might just be the secret to staying ahead!   If you are interested in our products and want to know more details, please contact judyzhou@drop-bio.com.
  • Why Choose Natural Substances as Surfactants? Dec 06, 2024
    Surfactants, classified under the “catalysts and various auxiliaries” branch of the fine chemicals industry, are an indispensable part of modern production. Often referred to as the “MSG of the industrial world,” they find applications across virtually all fine chemical sectors, including industrial processes, agriculture, personal care, and new material development.   In recent years, personal care and cleaning products have become two of the most significant global consumer markets. Surfactants are key ingredients in these products and are among the substances that come into frequent contact with the skin. Depending on their hydrophilic-lipophilic balance (HLB) value, surfactants can serve multiple functions, such as cleaning, foaming, emulsifying, wetting, dispersing, and solubilizing.   However, many widely used surfactants, such as alkyl sulfonates and alkyl sulfates, are directly applied to the skin in rinse-off personal care products like shampoos and body washes. These compounds may cause skin irritation and allergic reactions, raising concerns about their safety.   Sophorolipids: A Safer, Eco-Friendly Alternative     Sophorolipids, a class of glycolipid biosurfactants produced by yeast fermentation, have gained attention for their unique properties. They are non-toxic, biodegradable, and environmentally friendly, making them one of the most promising natural surfactants with significant market potential.   Sophorolipids provide multiple benefits, including:   Functional Advantages: Effective at dispersing, wetting, retaining moisture, lubricating, and emulsifying. Mild surfactant properties suitable for sensitive applications. Gentle antibacterial effects, efficiently inhibiting Propionibacterium acnes and Lactobacillus. Anti-inflammatory activity, reducing the release of inflammatory cytokines. Inhibition of lipase activity, preventing the breakdown of sebum into free fatty acids.   Skin Benefits: Stimulates dermal fibroblast metabolism and promotes collagen synthesis. Neutralizes free radicals and inhibits elastase activity, enhancing skin elasticity and repair. Activates macrophages and supports fibrinolytic functions.   Environmental and Safety Features: Heat-resistant and stable across a wide pH range. Safe and non-toxic with no irritation to the skin. Fully biodegradable and environmentally sustainable.   Growing Market Adoption   Due to their exceptional performance and safety profile, sophorolipids have already been adopted by leading international brands in personal care and cosmetic products. These end-use products are now widely available in markets across the EU, the US, Japan, and China.
  • Does Adenosine Work in Skin? Nov 29, 2024
    Adenosine is a common active ingredient in skincare products, valued for its potential anti-aging and skin-repairing properties. Here are some of the key benefits of adenosine for the skin: Adenosine boosts the energy metabolism of skin cells and stimulates collagen production, which helps to smooth fine lines and wrinkles while improving skin elasticity and firmness.It also strengthens the skin barrier, contributing to a smoother and healthier complexion. Adenosine has anti-inflammatory properties that can soothe sensitive skin and reduce redness and irritation caused by inflammation. Adenosine stimulates microcirculation in the skin, improving dullness and making skin look more radiant and healthy. Adenosine is often considered a gentle active ingredient for all skin types, including sensitive skin. Precautions: The concentration of adenosine in skincare products is generally low (0.1%-1%), which is sufficient to be effective without irritating the skin. Adenosine can work synergistically with other anti-aging ingredients (e.g., niacinamide, vitamin C), but avoid using it together with ingredients that may cause irritation (e.g., high concentrations of fruit acids).
  • Why Is Vitamin B12 Suitable for Sensitive Skin? Nov 28, 2024
    Sensitive skin often struggles with redness, irritation, and an impaired skin barrier, making it prone to discomfort and inflammation. Vitamin B12 (cobalamin), has emerged as an ideal ingredient for soothing and restoring sensitive skin due to its unique anti-inflammatory and reparative properties. One of the highlights of Vitamin B12 is its excellent anti-inflammatory effects. Dermatitis symptom scores decreased significantly more on the side treated with VB12 cream than on the side treated with blank cream. By reducing the level of inflammation, Vitamin B12 relieves redness and irritation, providing an immediate soothing effect on damaged skin. In addition, vitamin B12 plays a key role in repairing the skin barrier. It promotes protein synthesis, particularly the production of keratin and collagen, which are essential for maintaining the skin's protective layer. A strengthened barrier not only helps lock in moisture, but also protects against external stimuli, thus making the skin less sensitive. Vitamin B12 also possesses powerful antioxidant properties that neutralize free radicals and reduce oxidative stress caused by environmental factors such as UV rays and pollution. This protective effect further reduces the feeling of skin irritation and supports skin health. There are three different specifications of DropCare® VB12 availabled to customers. Gentle and highly effective, Vitamin B12 brings significant improvement to sensitive skin through its multiple actions of soothing, repairing, and protecting, while enhancing the skin's resilience and comfort.
  • Can Mandelic Acid Regulate Oil Secretion? Nov 14, 2024
    Mandelic acid is an alpha hydroxy acid (AHA) with a relatively large molecular structure, which means it penetrates the skin more slowly and is therefore considered gentler compared to other acids. Due to its lipophilic nature, mandelic acid is particularly suitable for oily and acne-prone skin. Its oil-regulating effects include the following: 1. Dissolving Oil in Pores: Mandelic acid can penetrate deep into the pores to help dissolve excess sebum, clearing out debris that clogs pores and reducing the formation of blackheads and acne. 2. Regulating Oil Secretion: By removing excess oil from the pores, mandelic acid gradually helps balance oil secretion, leaving the skin less shiny and with a fresher appearance. 3. Gentle Exfoliation: As a mild AHA, mandelic acid promotes the shedding of dead skin cells, making the skin smoother and more radiant. This gentle exfoliation helps prevent clogged pores caused by excess buildup.   In addition, mandelic acid has antibacterial and skin-brightening properties, making it suitable for regular use. When using mandelic acid, it’s recommended to introduce it gradually and always pair it with good sun protection to achieve optimal skincare benefits.
  • Is HPR(Hydroxypinacolone Retinoate) Retinol really mild and not irritating? Oct 27, 2024
    Retinoids are substances that are similar in structure and function to retinol, including: Drugs such as retinoic acid (RA), isotretinoin, adapalene, tazarotene, etc.; Retinol (retinol), retinaldehyde, retinyl palmitate, retinyl propionate, retinyl retinoate, and now the up-and-coming hydroxypinazone retinoate (HPR), among others. These substances can be converted into each other, so that there is a transformation pathway: After the body absorbs retinol, if it can't consume it, it converts it into retinyl palmitate and stores it, and when needed, hydrolyzes the palmitate bond with esterase (the red position in the retinol ester structure diagram on the right is broken), and retinol is released.Retinol is stripped of a hydrogen atom and oxidized to become retinaldehyde, which is an intermediate state. Retinaldehyde is further oxidized, adding an oxygen atom that becomes retinoic acid.Retinoic acid (tretinoin/retinoid) is the actual form of retinoid that enters the nucleus to bind to trans-retinoin reaction elements (RAR/RXR) and initiates the corresponding gene expression. It not only retains the efficacy group of tretinoin, but can directly bind to the receptor; It also covers the irritating groups and improves the physical and chemical stability. Cosmetics containing HPR (Hydroxypinacolone Retinoate)  can be used even on VA-sensitive skin, but note that pregnant women should not use them!        
  • Does the dihydroxyacetone really work for self-tanning Jul 22, 2024
    A quick and easy way to get a healthy wheat-skin tone is to apply a tanning product. When selecting a tanning product, people tend to choose different products based on the degree of color they want to achieve. In fact, the main efficacy substance of most products is dihydroxyacetone(DHA). The dosage of dihydroxyacetone(DHA) added determines the final degree of coloration of the product on the skin. So what's the mechanism of dihydroxyacetone discoloration on the skin? Dihydroxyacetone and proteins in the skin undergo a Malanin reaction, turning the cuticle proteins brown.The specific reaction principle is as follows: Dihydroxyacetone(DHA) does not damage the skin, and is considered a safe skin coloring agent. The color is not removed by simple washing, swimming, or natural perspiration, but it only lasts for 5 to 7 days, as skin cells are continuously being shed. Exfoliation, tape stripping, prolonged water submersion, or heavy sweating can lighten the tan, as these all contribute to rapid dead skin cell pealing. Today, dihydroxyacetone(DHA) is the main active ingredient in virtually all sunless tanning skincare preparations. The above pictures were taken from some subjects in a clinical experiment of DropBio. The coloring was recorded after 3 consecutive times (once a day) of using Instant Tanning Mousse with 10% DropBio@ DHA, and the subsequent fading was continuously recorded. So Dihydroxyacetone(DHA) is a very effective ingredient for self-tanning.  
  • Is ceramide a safe product? Jul 22, 2024
    As we all know, ceramide is a lipid that is similar in structure to the substance that makes up the cuticle of the skin, so it can quickly penetrate the skin and maintain the renewal of the skin's natural protective layer, maintain the balance of natural hydration. When combined with the moisture in the cuticle, it can form a net-like structure to firmly lock the moisture. Ceramide is an important skin-activating ingredient in the cuticle that strengthens the skin barrier, rebuilds cells, and reduces the effects of the external environment by forming effective skin surface barriers.      When Ceramide is added to the damaged skin, the composition of the lipids between the cells is improved and the cells on the surface of the skin become compact and regular again.While the moisture inside the skin is locked in, the outside irritation and bacteria can no longer penetrate the skin's surface, effectively reducing sensitivity and acne formation, so Ceramide is a safe, natural and highly effective skin care ingredient.
  • DropPrev® CHA: The Next-Generation Preservative Active at Neutral pH Dec 02, 2025
    In the world of cosmetic preservation, formulating at higher pH levels has always been a challenge. Traditional organic acid preservatives like sorbic acid, benzoic acid, or dehydroacetic acid lose their effectiveness as pH rises above 6, leaving formulations vulnerable to microbial growth. This limitation often forces brands to compromise between stability, skin feel, and preservation efficacy. Enter DropPrev® CHA (Caprylhydroxamic Acid) – a innovative, multifunctional ingredient that breaks the pH barrier. What is DropPrev® CHA? DropPrev® CHA is a mild organic acid derived from caprylic acid and hydroxylamine. With the INCI name Caprylhydroxamic Acid and a molecular weight of 159.23, it’s a globally recognized and compliant material, included in China’s IECIC 2015 inventory. But what truly sets it apart is its exceptionally high pKa of ~9.4. The pH Game-Changer For traditional organic acids, antimicrobial activity depends on the percentage of undissociated acid, which drops dramatically as pH increases. At pH 6, an acid needs a pKa of at least 6 to be 50% active. Most conventional preservatives fall short. DropPrev® CHA defies this trend. Thanks to its high pKa, it remains fully active across a wide pH range. Comparative Activity at Various pH Levels:     pH Dehydroacetic Acid Benzoic Acid Sorbic Acid CHA 3 99.5% 94.1% 98.3% 100% 4 94.9% 61.3% 84.9% 100% 5 65.1% 13.7% 36.0% 100% 6 15.7% 1.6% 5.3% 100% 7 1.8% 0.2% 0.6% 100% This means CHA is the only organic acid that remains completely undissociated and active at neutral pH. Dual Mode of Action 1. Metal Chelation – Primary Mechanism CHA acts as a potent chelator, particularly for Fe³⁺ (stability constant: 11.4), competing with microbial siderophores for iron. Iron is essential for microbial growth, electron transport, and DNA synthesis. By sequestering iron, CHA starves microbes of this vital nutrient. It also chelates Ca²⁺ and Mg²⁺ at the cell membrane, increasing permeability and disrupting microbial integrity. 2. Classic Organic Acid Activity In its undissociated form, CHA exhibits lipophilic properties, allowing it to penetrate microbial cell membranes. Once inside, it can disrupt internal pH and metabolic processes. Key Benefits & Features Broad-Spectrum Activity: Effective against bacteria, yeast, and mold. Shown to inhibit Aspergillus niger at a low MIC of 0.078%. Formulation Flexibility: Compatible with emulsions, anhydrous systems, surfactant-based cleansers, and color cosmetics. Similar Log Kow (1.67) to other common preservatives like caprylyl glycol and glyceryl caprylate, indicating favorable skin feel and solubility. High Safety Profile: Widely studied, non-mutagenic (AMES test negative), and historically used as a feed additive. Recommended Use Usage Level: 0.05% – 0.15% Solubility: Soluble in propylene glycol, glycerin, and surfactants. pH Range: Effective from pH 2–8 (activity gradually decreases above pH 8). Application: Best paired with bacterial and yeast inhibitors (e.g., phenoxyethanol, ethylhexylglycerin, 1,2-octanediol) for broad-spectrum protection. Note: Avoid extended heating above 90°C. Add EDTA-2Na to prevent discoloration from iron-containing clays or minerals. Conclusion DropPrev® CHA represents a significant step forward in preservation technology. Its ability to remain active at neutral pH, combined with its dual-action mechanism and strong safety record, makes it an ideal choice for modern, mild, and high-performance cosmetic formulations. Whether you're developing a gentle facial cream, a pH-balanced shampoo, or a long-wearing makeup product, CHA offers reliable preservation without compromising pH or sensory attributes.
  • Revolutionize Your Formulations: Meet DropCare® Nano Jojo & DropCare® Nano Linn Dec 01, 2025
    In the ever-evolving world of cosmetics, delivering active ingredients effectively is the key to high-performance products. Consumers demand formulas that are not only powerful but also feel luxurious and deliver visible results. This is where advanced nanotechnology makes all the difference. Today, we’re excited to spotlight two groundbreaking ingredients from DropCare that are setting new standards for efficacy and stability: Nano Jojo and Nano Linn.   The Power of Nano-Encapsulation Both of our featured ingredients are processed using high-pressure microfluidization nano-encapsulation technology. This advanced process encapsulates precious plant oils within nanoscale carriers, leading to a trio of significant benefits: Enhanced Stability: Protects sensitive oils from degradation. Superior Permeability: Allows for better delivery of active ingredients into the skin. Increased Bioavailability: Ensures your skin and hair can actually use the nutrients they receive. Despite their shared advanced technology, each product offers a unique profile to meet specific formulation needs.   DropCare® Nano Jojo: The Ultimate All-Rounder Product Name: A Jojoba Oil product processed using high-pressure microfluidization nano-encapsulation technology. Jojoba oil is celebrated for its similarity to the skin’s natural sebum, and DropCare® Nano Jojo takes this versatile ingredient to the next level. Key Functions: Sebum Regulation, Lightweight Hydration, Barrier Restoration, and Oil-Moisture Balance. Why Formulators Love It: Multi-Functional Applications: Skincare: Perfect for serums, emulsions, creams, and sunscreens. It enhances hydration and restorative properties while improving skin feel. Hair Care: Ideal for hair emulsions, serums, and shampoos. It nourishes hair without greasiness and adds brilliant shine. Makeup: Creates a more adherent, long-lasting, and hydrated finish in foundations and makeup primers. User-Friendly: It is oil-soluble but easily dispersible in water, making it a versatile component in a wide range of formulations. DropCare® Nano Linn: Nature's Most Stable Oil, Perfected Product Name: A Meadowfoam Seed Oil product processed using high-pressure microfluidization nano-encapsulation technology. Meadowfoam Seed Oil is renowned as "the most stable plant oil in nature." DropCare® Nano Linn encapsulates this powerhouse, making its benefits more accessible than ever. Key Functions: Ultimate Hydration, Potent Antioxidant, High Stability, and Skin Softening.   Why Formulators Love It: Targeted High-Performance Applications: Skincare: Exceptionally suited for anti-aging serums, rich creams, and barrier repair formulations where superior stability and hydration are critical. Makeup: Enhances foundations, lipsticks, and primers for a hydrated, long-lasting wear. Acts as a Nanocarrier: A special application of Nano Linn is its ability to serve as a nanocarrier for other essential oils or sensitive active ingredients, boosting the stability and efficacy of your entire formula. Formulation at a Glance Both ingredients are designed for seamless integration into your production process.     Feature DropCare® Nano Jojo DropCare® Nano Linn INCI Aqua, Simmondsia Chinensis (Jojoba) Seed Oil, Propanediol, Hydrogenated Lecithin, Polyglyceryl-10 Laurate, Sucrose Stearate Aqua, Limnanthes Alba (Meadowfoam) Seed Oil, Propanediol, Hydrogenated Lecithin, Polyglyceryl-10 Laurate, Sucrose Stearate Appearance White to light yellow opaque liquid White to light yellow opaque liquid Dosage 0.5 - 10% 0.5 - 10% Solubility Oil-soluble. Easily soluble in water. Oil-soluble. Easily soluble in water. Shelf Life 1 year 1 year Storage Store at room temperature, away from light and in a sealed container. Store at room temperature, away from light and in a sealed container. Unlock Your Product's Potential Whether you are developing a lightweight moisturizer, a nourishing hair serum, or a long-wearing foundation, DropCare® Nano Jojo and Nano Linn provide the cutting-edge solution you need. We can also provide the recipe for your reference. The minimum order quantity is negotiable, generally starting at 15kg. Ready to innovate? Contact us today to request a sample or discuss your formulation needs. Please contact: judyzhou@drop-bio.com      
  • DropBrigt® Litein – The Next-Generation Brightening & Anti-Aging Active Nov 21, 2025
    Unlock Cellular Beauty with DropBrigt® LiteinIn the quest for radiant, youthful skin, the key lies not just in surface-level treatments, but in empowering the skin’s own defense and renewal mechanisms. Introducing DropBrigt® Litein (INCI: Oxothiazolidinecarboxylic Acid, CAS 19771-63-2) — a groundbreaking active that works at the cellular level to promote brighter, smoother, and more resilient skin. 🌟 How Does DropBrigt® Litein Work? DropBrigt® Litein is a precursor to glutathione, the body’s master antioxidant. Unlike topical glutathione, which has limited absorption, Litein effectively penetrates skin cells and stimulates the natural synthesis of glutathione, enhancing the skin’s intrinsic ability to: Inhibit Tyrosinase Activity – Reducing melanin production and shifting synthesis from dark eumelanin to lighter phaeomelanin. Neutralize Free Radicals – Protecting proteins, lipids, and DNA from oxidative damage. Repair UV-Induced Damage – Lowering ROS and lipid peroxidation for stronger anti-photoaging benefits. 📊 Clinically Proven Efficacy 1. Powerful Antioxidant & Anti-Melanogenic Action ↓ ROS by 28.8% at 0.1% concentration after UVB exposure (p < 0.001) ↓ MDA (lipid peroxidation) by 54.84% at 0.1% (p < 0.001) Boosts intracellular glutathione, shifting melanin type and brightening skin tone 2. Strengthens Skin Under Stress In muscle fatigue studies, cells treated with Litein showed better stress resilience, maintaining performance under prolonged exertion — a promising model for skin under environmental or emotional stress. 3. Safe & Non-Toxic IC₅₀ = 5.66 mg/mL (3T3 fibroblast assay) Oral LD₅₀ > 2630 mg/kg – Classified as non-toxic (GHS Category 5) Non-irritating, non-comedogenic, and suitable for sensitive skin 🧴 Formulation Advantages Water-soluble, compatible with a wide pH range Stable under normal processing conditions – no special stabilizers required Synergistic with antioxidants like sodium sulfite, sodium metabisulfite, and vitamin C Versatile applications: serums, creams, ampoules, and brightening treatments ✅ Recommended Use     Application Usage Level Daily Care 0.01% – 0.15% Intensive Treatment 0.5% – 2% 🧪 Quality Specifications     Parameter Specification Appearance White crystalline powder Assay (HPLC) ≥ 98.0% Heavy Metals (Pb) ≤ 30 ppm Arsenic (As) ≤ 1 ppm Loss on Drying ≤ 0.3% 💡 Why Choose DropBrigt® Litein? Whether you’re developing a brightening serum, anti-aging cream, or photoprotective formula, DropBrigt® Litein offers: Dual brightening & anti-aging benefits Cellular-level activation of glutathione Clinically validated antioxidant performance Excellent safety and formulation flexibility Formulate with Confidence. Formulate with Science.Integrate DropBrigt® Litein into your next skincare innovation and deliver visible, lasting radiance. If you are interested in our products and want to know more details, please contact judyzhou@drop-bio.com.
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