Sodium Polyglutamate (PGA Long-Lasting Moisturizing Emollient)-CAS 28829-38-5
Product Name: Sodium Polyglutamate (PGA Long-Lasting Moisturizing Emollient)
INCI Name: Sodium Polyglutamate
Alias: PGA, Gamma-Polyglutamic Acid Sodium Salt, Natural Fermentation Moisturizer, Super Water-Locking Agent, Skin Barrier Protectant, Transdermal Hydrating Factor, Skincare Synergist
CAS No.: 28829-38-5
Appearance: Colorless transparent viscous liquid or white fine powder, pure and odorless, uniform texture, free of impurities, precipitation and peculiar smell.
Grade: Cosmetic Premium Grade
MOQ (Minimum Order Quantity): 25KG
Solubility: Fully soluble in water, uniformly miscible with aqueous-phase skincare systems.
Storage Condition: Sealed and stored in dry, cool and ventilated warehouse, storage temperature 5–30℃, avoid direct sunlight, high temperature heating and freezing environment. Keep tightly sealed after opening to prevent moisture and dust contamination, ensuring stable moisturizing and barrier-repairing efficacy.
Shelf Life: 24 Months
Sodium Polyglutamate, PGA, Gamma-Polyglutamic Acid, Long-Lasting Moisturizer, Natural Fermentation Humectant, Skin Barrier Repair, Water-Locking Agent, Transdermal Hydration, Anti-Drying Cosmetic Raw Material, Synergistic Skincare Enhancer
Sodium Polyglutamate (PGA Long-Lasting Moisturizing Emollient)-CAS 28829-38-5
Sodium Polyglutamate (PGA) is a high-end natural biological moisturizing raw material derived from pure microbial fermentation, known as the "super water-locking factor" in the skincare industry.
Different from traditional small-molecule humectants with short efficacy and sticky texture, PGA has a unique long-chain multi-hydrophilic molecular structure, with water absorption and locking capacity far exceeding hyaluronic acid and glycerin.
It can form a breathable and waterproof protective film on the skin surface to reduce transepidermal water loss durably. Meanwhile, it stimulates the synthesis and accumulation of skin natural moisturizing factors, realizes endogenous hydration from deep skin, and solves the fundamental problem of easy dryness of sensitive and dry skin.
In addition, PGA has excellent formula synergistic performance, which can significantly promote the transdermal absorption of various active ingredients, improve the utilization rate of formula efficacy, and bring long-lasting, refreshing and non-greasy moisturizing effect to skincare products. It is a necessary upgraded functional raw material for high-grade long-acting moisturizing and barrier-repairing cosmetic formulas.
Key Benefits
• Super Long-Lasting Moisturizing, Surpass Traditional Humectants: With ultra-high water absorption and water-locking molecular structure, the moisturizing retention time is significantly longer than hyaluronic acid and glycerin. It realizes all-day continuous hydration, effectively improves skin dryness, tightness and peeling, and avoids moisture rebound and dryness after formula use.
• Breathable Film-Forming Protection, Repair Skin Barrier: It forms a dense and breathable water-locking protective layer on the skin surface, which can isolate external dry stimuli, reduce transepidermal water loss, repair damaged barrier, enhance skin self-tolerance, and relieve sensitive and dry discomfort.
• Endogenous Hydration, Activate Skin Natural Moisturizing Factors: Different from single superficial water replenishment, PGA can promote the accumulation of skin NMF, activate the skin's own water storage capacity, fundamentally improve dry and dull skin texture, and make skin moist and tender from the inside out.
• Refreshing Non-Sticky Skin Feel, Universal Skin Adaptation: Abandons the greasy and sticky defect of traditional high-moisture raw materials. It presents a refreshing and smooth matte skin feel after application, does not stick hands or face, and is suitable for oily skin, mixed skin and sensitive skin formulas without burden.
• Powerful Formula Synergy, Boost Active Efficacy: It has excellent transdermal penetration assisting effect, which can open skin absorption channels, promote the absorption and exertion of various active ingredients such as nicotinamide, peptides and plant extracts, and double the overall efficacy of skincare formulas.
• Natural Green Safety, Low-Irritation & High Stability: Derived from natural probiotic fermentation, non-chemical synthesis, biodegradable and environmentally friendly. Zero irritation to skin, no sensitization, high temperature and storage stable, no efficacy attenuation, fully compliant with international cosmetic safety standards.
Applications
• Long-Lasting Hydrating Skincare Series: Core long-acting moisturizing raw material for hydrating toner, moisturizing lotion, essence water and daily moisturizing cream. It lasts for all-day hydration, improves dry and rough skin, and maintains long-term skin moist balance.
• Sensitive Skin Barrier Repair Series: Special soothing and repairing raw material for sensitive skin soothing lotion, barrier repair cream, post-sun repair gel and post-procedure mild skincare products. It relieves dry sensitivity, reinforces skin barrier and reduces skin irritability.
• High-Efficiency Essence & Mask Products: Efficacy synergist and moisturizing base for hydrating essence, anti-dry repair essence, facial mask and sleeping mask. It promotes active absorption, locks in nutrient moisture, and improves skincare efficacy.
• Body & Daily Care Products: Widely added in body lotion, hand cream, anti-chapped skin cream and seasonal anti-dry care products to achieve whole-body long-lasting moisturizing and relieve dry peeling of body skin.
• Light Texture Makeup Base Products: Applied in moisturizing primer, light foundation cream and makeup setting lotion. It provides long-lasting bottom moisturizing, prevents dry card powder and makeup floating, and keeps makeup docile and lasting.
• High-Grade Anti-Aging Skincare Formulas: Matched with anti-aging ingredients such as peptides and retinol, it moisturizes and repairs while anti-aging, improves dry fine lines caused by water shortage, and enhances skin elasticity and plumpness.
Certificate Of Analysis (COA)
Test Item | Standard Specification | Test Result |
Product Name | Sodium Polyglutamate (PGA) | Compliant |
Appearance | Colorless Transparent Liquid / White Powder, Odorless | Compliant |
Solid Content (%) | ≥99.0 (Powder) / 20.0±1.0 (Liquid) | 99.2 / 20.1 |
Molecular Weight (Da) | 800,000–2,000,000 | 1,500,000 |
pH Value (1% Aqueous Solution) | 6.0–8.0 | 7.1 |
Moisture Content (%) | ≤0.5 | 0.21 |
Viscosity (mPa·s) | 8000–15000 | 11500 |
Water Absorption Rate | ≥1000 Times | Qualified |
Light Transmittance (%) | ≥98.0 | 99.1 |
Heavy Metal (Pb) | ≤1ppm | 0.1ppm |
Arsenic (As) | ≤0.5ppm | Not Detected |
Mercury (Hg) | ≤0.1ppm | Not Detected |
Cadmium (Cd) | ≤0.1ppm | Not Detected |
Total Bacteria | ≤100CFU/g | Qualified |
Pathogenic Bacteria | Negative | Negative |
Conclusion | Conforms to cosmetic grade quality standard | Qualified |
Frequently Asked Questions (FAQ)
• Q1: What is the MOQ of Sodium Polyglutamate PGA?
A1: The standard MOQ is 25KG, support sample orders for formula testing and trial production, and support customized powder/liquid specifications for mass production.
• Q2: What is the difference between PGA and Hyaluronic Acid (HA)?
A2: PGA has stronger water absorption and longer moisturizing duration than HA, with refreshing non-sticky skin feel and barrier repair function; HA focuses on rapid superficial hydration. The two are perfectly compounded to achieve rapid water supplement + long-term water locking + barrier repair triple effects, which is the mainstream high-end moisturizing formula combination.
• Q3: What is the recommended dosage in cosmetic formulas?
A3: Hydrating toner/lotion: 0.1%–0.5%; Moisturizing cream/essence: 0.2%–1.0%; Facial mask skincare: 0.1%–0.8%; Body care products: 0.05%–0.3%; Makeup base products: 0.1%–0.4%, adjustable according to product moisturizing demand and skin feel requirements.
• Q4: Is PGA suitable for sensitive skin and oily skin formulas?
A4: Absolutely suitable. PGA is natural fermentation raw material with ultra-low irritation, no sensitization and no burden. It has refreshing matte skin feel, will not cause greasy and stuffy problems for oily skin, and can repair sensitive skin barrier and relieve dry sensitivity, suitable for all skin types formulas.
• Q5: What core advantages does PGA have in skincare formulas?
A5: It solves the pain points of short moisturizing time, sticky skin feel and single efficacy of traditional moisturizers. It integrates long-acting water locking, barrier repair, endogenous hydration and active synergy, improves formula grade and efficacy comprehensively, and creates high-quality lasting moist skin feel.
• Q6: What are the formula usage notes?
A6: Water-phase addition, soluble at normal temperature, no high-temperature heating required; compatible with all water-soluble active ingredients and polyols; matched with HA for synergistic effect to maximize moisturizing performance; avoid excessive high concentration to prevent slight viscosity change.
• Q7: Can it provide stable supply and professional technical support?
A7: Strictly control core indicators such as solid content, viscosity and molecular weight to ensure stable batch consistency. Support long-term bulk order supply, and provide one-stop professional services including formula moisturizing debugging, HA-PGA compound ratio optimization and after-sales technical guidance.
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