Cosmetic Grade L-Selenomethionine(CAS 3211-76-5)
Product Name: L-Selenomethionine
Abbreviation: L-Se-Met
Chemical Name: (2S)-2-Amino-4-(methylselanyl)butanoic Acid
CAS No.: 3211-76-5
Grade: Cosmetic Grade (Skin Care Special)
Purity: ≥99.0%
Appearance: White Crystalline Powder, Odorless, Slightly Sweet Taste
Molecular Weight: 196.11
Molecular Formula: C₅H₁₁NO₂Se
MOQ (Minimum Order Quantity): 1KG
Solubility: Easily soluble in water, slightly soluble in ethanol, insoluble in organic solvents, fast dissolution rate, clear and transparent aqueous solution without impurities and precipitation
Specific Rotation: +18.0° ~ +22.0°
pH Value (1% Aqueous Solution): 5.0 - 6.5
Key Characteristics: Natural organic selenium amino acid, super antioxidant activity, free radical scavenging, anti-photoaging, brighten dull skin, repair damaged skin, mild and non-irritating, stable formula activity, wide compatibility
Storage Condition: Sealed, dry, cool and dark ventilated environment, avoid high temperature, strong light and humid air, prevent moisture absorption, agglomeration and efficacy loss, store separately from strong oxidants
Shelf Life: 24 Months
Application: Widely used in anti-photoaging skin care products, high-efficiency antioxidant essence, dullness brightening lotion and cream, post-sun repair series, anti-aging functional cosmetics and mild daily skin care formulas
L-Selenomethionine, Cosmetic Grade L-Selenomethionine, Selenium-Containing Amino Acid, High-Efficiency Antioxidant, Anti-Skin Aging, Dullness Brightening Agent, Skin Repair Cosmetic Raw Material, Mild Skin Care Additive
Cosmetic Grade L-Selenomethionine(CAS 3211-76-5)
Cosmetic-grade L-Selenomethionine is a high-purity organic selenium amino acid refined by advanced bio-fermentation technology, which is a premium super antioxidant functional raw material in high-end skin care. Different from ordinary amino acids, it integrates organic selenium active groups and amino acid molecular structures, possessing stronger and more durable free radical scavenging capacity than conventional antioxidant ingredients.
It can deeply penetrate the skin basal layer, efficiently neutralize excessive free radicals generated by ultraviolet radiation, environmental pollution and external stress, fundamentally reduce skin oxidative damage, and strongly resist photoaging and light aging. This ingredient can effectively improve skin problems such as sun dullness, pigmentation, rough texture and fine dry lines caused by long-term sun exposure, brighten overall skin tone, and restore skin translucency.
Meanwhile, L-Selenomethionine can activate skin cell vitality, accelerate damaged skin tissue repair, enhance skin barrier defense ability, reduce external irritation sensitivity, and maintain long-term healthy and stable skin state. With ultra-mild skin-friendly properties, low sensitization and zero irritation, it is perfectly compatible with various brightening, anti-aging and moisturizing ingredients, and is a core high-efficiency raw material for anti-photoaging, antioxidant maintenance and skin brightening functional skin care products.
Key Benefits
• Super-Efficient Antioxidant & Scavenge Free Radicals: Unique organic selenium amino acid structure, far superior antioxidant capacity to ordinary ingredients, thoroughly remove skin free radicals, block oxidative aging chain reaction.
• Strong Anti-Photoaging & Sun Damage Repair: Specifically resist UV-induced skin aging, improve sun darkening, flaky and rough skin after sun exposure, reverse light aging symptoms caused by long-term photodamage.
• Brighten Dullness & Fade Pigmentation: Inhibit oxidative pigment precipitation, improve sun dullness and uneven skin tone, fade superficial pigmentation, and restore skin bright and translucent luster.
• Activate Cells & Repair Skin Barrier: Activate skin cell metabolic vitality, accelerate the repair of sun-damaged and fragile skin, enhance skin defense and tolerance, and stabilize skin health.
• Mild Low-Sensitivity & Wide Application: Natural biological amino acid ingredient, skin-friendly weak acid property, zero irritation and zero burden, suitable for all skin types including sensitive skin for long-term maintenance.
• Stable Formula & Synergistic Efficacy: High-purity low-impurity formula, not easy to oxidize and deteriorate, highly compatible with VC derivatives, peptides and other ingredients, significantly enhance comprehensive anti-aging efficacy.
Applications
• Anti-Photoaging Skin Care Series: Core functional raw materials for anti-light aging essence, sun protection repair lotion and outdoor anti-aging skin care products, focusing on improving UV-induced skin aging and dullness.
• Post-Sun Repair Functional Products: Applied in after-sun soothing repair cream, sun-darkening brightening essence and sensitive sun-exposed skin maintenance products to relieve sun damage and restore skin vitality.
• High-Efficiency Antioxidant Maintenance Formula: Added in daily antioxidant essence, anti-aging cream and fine line repairing products to resist oxidative aging and delay skin light aging.
• Dullness Brightening & Uniform Skin Tone Products: Suitable for brightening toner, yellowish skin improvement and pigment conditioning skin care products to brighten skin tone and refine skin texture.
• High-End Mild Anti-Aging Cosmetics: Used in high-end compound anti-aging formulas, perfectly matching mild and efficient skin care systems, improving product grade and comprehensive efficacy.
Certificate Of Analysis (COA)
Test Item | Standard Specification | Test Result |
Product Name | L-Selenomethionine | Compliant |
CAS No. | 3211-76-5 | Compliant |
Appearance | White Crystalline Powder, Odorless | Compliant |
Purity | ≥99.0% | 99.74% |
Specific Rotation | +18.0° ~ +22.0° | +20.5° |
Loss on Drying | ≤0.2% | 0.06% |
Residue on Ignition | ≤0.1% | 0.03% |
Heavy Metal (Pb) | ≤10ppm | Qualified |
Arsenic (As) | ≤2ppm | Qualified |
pH Value (1% Solution) | 5.0 - 6.5 | 5.8 |
Conclusion | Conforms to cosmetic grade quality standard | Qualified |
Frequently Asked Questions (FAQ)
• Q1: What is the MOQ of cosmetic grade L-Selenomethionine? A1: The standard MOQ is 1KG, and sample orders are supported for quality testing.
• Q2: What certification documents can be provided? A2: Complete COA, MSDS and full set of global customs clearance documents are available.
• Q3: What is the recommended dosage in cosmetic formulas? A3: Conventional addition ratio is 0.05%-1.0%, with super stable antioxidant and brightening effects, mild and non-irritating to skin.
• Q4: What is the core advantage of L-Selenomethionine in skin care? A4: It is a rare organic selenium amino acid raw material, with antioxidant capacity far exceeding ordinary amino acids, focusing on anti-photoaging and sun damage repair, filling the gap of outdoor anti-aging skin care ingredients.
• Q5: Can it be compounded with other antioxidant ingredients? A5: Yes, it can be perfectly compounded with VC, VE, glutathione and other ingredients to form a multi-dimensional antioxidant system, greatly improving anti-aging and brightening efficacy.
• Q6: Do you support stable large-batch supply all year round? A6: Sufficient factory capacity ensures continuous and stable bulk supply throughout the year.
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