EGCG Epigallocatechin Gallate High-purity Antioxidant Raw Material (CAS 989-51-5)
Product Name: EGCG (Epigallocatechin Gallate) High-purity Green Tea Antioxidant Raw Material
Alias: Epigallocatechin Gallate, Green Tea Polyphenol Monomer, High-activity EGCG, Anti-oxidation & Anti-glycosylation Ingredient, Oil-control Repair Raw Material, Water-soluble Green Tea Extract Powder
INCI Name: Camellia Sinensis Leaf Extract
CAS Number: 989-51-5
Molecular Formula: C22H18O11
Molecular Weight: 458.37
Effective Content: EGCG ≥98% (HPLC Test)
Appearance: Off-white to Light Yellow Fine Powder, Slight Fresh Tea Aroma, Easily Soluble in Water and Ethanol, Aqueous Solution is Clear Light Green Without Precipitation and Impurities
Grade: High-end Cosmetic Grade / Ultra-high Activity Antioxidant Grade / Purified Green Tea Extract Grade / Sensitive Skin Adaptable Grade
MOQ: 1KG (Small batch trial order available, MOQ 100G)
Package: 1KG/Aluminum Foil Sealed Bag, 5KG/Food-grade Sealed Plastic Drum, 25KG/Sealed Standard Fiber Drum (Lined with Food-grade Plastic Bag, Moisture-proof, Light-proof and Anti-oxidation)
Shelf Life: 24 Months (Sealed, Light-proof, Cool & Dry Environment Storage, Storage Temperature 2-8℃, Avoid High Temperature, Strong Light and Humid Environment, Prevent Oxidation, Discoloration and Activity Attenuation)
EGCG, Epigallocatechin Gallate, Green Tea Extract, Cosmetic Grade Antioxidant, Super Free Radical Scavenger, Oil-control Ingredient, Anti-glycation, UV Protection Repair, Water-soluble Tea Polyphenol, Skin Brightening Raw Material
EGCG Epigallocatechin Gallate High-purity Antioxidant Raw Material (CAS 989-51-5)
EGCG (Epigallocatechin Gallate) is a high-purity single-molecule active monomer refined from high-quality fresh green tea leaves via low-temperature cold extraction, membrane purification and freeze-drying technology.
It is the most active and highest-content functional component in green tea polyphenols, known as the "king of natural antioxidants".
Its antioxidant capacity is far beyond vitamin C, vitamin E and ordinary grape seed OPC, with powerful superoxide free radical scavenging activity.
Different from ordinary tea extracts with low monomer purity, mixed impurities and single efficacy, and synthetic antioxidant ingredients with potential irritation, our cosmetic-grade EGCG features 98% ultra-high single-component purity, pure natural plant source, no chemical residues, mild and non-irritating.
It has multi-dimensional skincare advantages: firstly, it efficiently scavenges skin free radicals, blocks oxidative damage, inhibits skin photoaging and chronological aging, and delays fine lines and sagging; secondly, it has excellent anti-glycation effect, inhibits collagen glycation yellowing, improves skin dullness and turbid complexion, and resists yellowing and aging; thirdly, it regulates sebaceous gland secretion, balances skin water and oil, improves oily shine and rough pores, and refreshes oily skin; fourthly, it repairs UV-induced skin damage, relieves sun redness and inflammation, and enhances skin sun resistance.
In addition, EGCG has excellent water solubility and formula compatibility, can be perfectly compounded with hyaluronic acid, niacinamide, centella asiatica extract, peptides and other ingredients to form a synergistic efficacy system, comprehensively upgrade antioxidant, brightening, oil-control and soothing effects, and optimize formula mildness.
The product has stable physical and chemical properties, no discoloration, precipitation or activity loss in conventional cosmetic processing, non-sensitizing, non-toxic and harmless, free of heavy metal impurities, passed multiple skin safety tests, suitable for oily skin, combination skin, sensitive skin and aging skin, and is an indispensable core raw material for high-end antioxidant, anti-glycation, oil-control and repair skincare products.



Key Benefits
•Ultra-high Antioxidant Activity, Stronger Free Radical Scavenging: With 98% high-purity single EGCG monomer, the antioxidant efficacy is several times higher than ordinary tea polyphenols, VC and VE. It efficiently scavenges various skin free radicals, blocks oxidative aging, fundamentally improves skin oxidation dullness, and provides long-term anti-oxidation protection for the skin.
•Exclusive Anti-glycation & Anti-yellowing, Improve Dull Turbid Skin: It has excellent anti-glycation activity, inhibits collagen glycosylation and cross-linking, improves skin yellowing, dullness and tired complexion caused by glycation aging, brightens and clarifies skin tone, and solves the problem of perennial dull and yellow skin.
•Natural Oil-control & Pore Refining, Refreshing Skin Feeling: Mildly regulates facial sebaceous gland secretion, balances skin water and oil metabolism, reduces oily shine and greasy feeling, refines enlarged pores caused by oil blockage, improves rough skin texture, and keeps skin fresh and non-greasy for a long time, especially suitable for oily and combination skin care.
•UV Damage Repair & Soothing Anti-inflammation: Effectively repairs skin oxidative damage caused by ultraviolet radiation, relieves sun-induced redness, heat and slight inflammation, reduces photosensitivity, enhances skin natural sun protection ability, and assists in post-sun repair and daily light protection care.
•Excellent Compatibility, Multi-ingredient Synergistic Enhancement: Good water solubility and wide formula adaptability, can be freely compounded with moisturizing, brightening, soothing and anti-aging ingredients such as hyaluronic acid, niacinamide, centella asiatica and peptides. It synergistically amplifies comprehensive efficacy, reduces formula irritation, and enriches product multi-dimensional skincare effects.
•Pure Natural & Ultra-mild, Safe for Full Skin Adaptation: Pure natural green tea leaf extract, no synthetic additives, no heavy metal residues, non-toxic and non-irritating, non-sensitizing. It passes strict skin safety tests, safe for long-term use, suitable for oily skin, combination skin, sensitive skin and aging skin, with high skin tolerance.
Applications
• Antioxidant Anti-aging Series: High-efficiency antioxidant serum, anti-oxidation toner, anti-aging moisturizing lotion, free radical scavenging essence.
• Anti-glycation Brightening Series: Anti-yellow brightening essence, glycation repair lotion, dullness removal skincare water, translucent brightening cream.
• Oil-control Refining Series: Oily skin refreshing toner, pore refining essence, oil-balancing facial lotion, matte moisturizing cream.
• Sun Repair & Protection Series: Post-sun soothing repair essence, UV antioxidant protection lotion, light anti-photoaging skincare products.
• Soothing & Acne Care Series: Sensitive skin antioxidant soothing milk, inflammatory acne repair lotion, refreshing oil-control facial mask.
• High-end Functional Skincare Series: Plant-based anti-aging products, oil-control brightening custom formulas, salon-level antioxidant repair skincare.
Certificate Of Analysis (COA)
Test Item | Standard Specification | Test Result |
Product Name | Epigallocatechin Gallate (EGCG≥98%) | Compliant |
Appearance (25℃) | Off-white to Light Yellow Uniform Fine Powder | Light Yellow Uniform Fine Powder, No Impurities |
EGCG Monomer Content | ≥98.0% | 98.6% |
Water Solubility (25℃) | Easily soluble in water, clear and transparent solution | Fully soluble, clear light green solution |
pH Value (1% Aqueous Solution) | 4.0-6.0 | 5.1 |
Loss on Drying | ≤2.0% | 1.2% |
Heavy Metals (Pb) | ≤1ppm | <0.5ppm |
Antioxidant & Anti-glycation Activity | Excellent efficacy, meets cosmetic grade standards | Qualified |
Formula Compatibility | Compatible with conventional cosmetic raw materials, no delamination or precipitation | Compliant |
Conclusion | Conforms to cosmetic grade enterprise standards and skin safety specifications | Qualified |
Frequently Asked Questions (FAQ)
• Q1: What are the unique advantages of EGCG compared with ordinary tea polyphenols and antioxidants?
A1: Ordinary tea polyphenols are mixed monomers with low purity and weak efficacy, while our EGCG is 98% high-purity single active monomer, with stronger and more stable antioxidant activity. It has exclusive anti-glycation and oil-control effects that VC, VE and OPC do not have, integrating anti-oxidation, anti-glycation, oil-control and repair, with more comprehensive efficacy and higher cost performance.
• Q2: What is the recommended addition ratio of EGCG in skincare formulas?
A2: Conventional antioxidant skincare products: 0.02%-0.1%; Anti-glycation brightening formulas: 0.1%-0.3%; Oily skin oil-control formulas: 0.05%-0.2%; Post-sun repair products: 0.1%-0.2%; Mask essence formulas: 0.05%-0.15%. It is recommended to add at low temperature (below 40℃) and avoid high-temperature long-term stirring to protect activity.
• Q3: Will EGCG cause formula color change or precipitation?
A3: High-purity EGCG aqueous solution is light green with natural faint color, no impurities and no precipitation. Strictly control the addition amount, avoid high temperature and strong light exposure during production and storage, the formula color is stable, no yellowing, browning or precipitation delamination, which does not affect product appearance and quality.
• Q4: What ingredients are suitable for EGCG compounding?
A4: EGCG has excellent water solubility and compatibility. It can be perfectly compounded with hyaluronic acid, glycerin, niacinamide, centella asiatica extract, panthenol, peptides and other ingredients. It can form a multi-effect synergistic system of anti-oxidation, anti-glycation, soothing and oil control, significantly improving product comprehensive efficacy.
• Q5: How to store EGCG to maintain maximum activity?
A5: It needs sealed, light-proof and low-temperature storage (2-8℃). Avoid high temperature, strong light, humid environment and oxidant contact to prevent activity loss and oxidation discoloration. After opening the package, seal and refrigerate immediately and use it up within the validity period to ensure optimal use effect.
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