Cosmetic Grade L-Leucine(CAS 61-90-5)
Product Name: L-Leucine
Abbreviation: Leu
Chemical Name: (2S)-2-Amino-4-Methylpentanoic Acid
CAS No.: 61-90-5
Grade: Cosmetic Grade (Skin Care Special)
Purity: ≥99.0%
Appearance: White Orthorhombic Crystal or Crystalline Powder, Odorless, Slightly Bitter Taste
Molecular Weight: 131.17
Molecular Formula: C₆H₁3NO₂
MOQ (Minimum Order Quantity): 1KG
Solubility: Slightly soluble in water, insoluble in ethanol and conventional organic solvents, stable in neutral and weak acidic solutions, no impurity precipitation, excellent formula stability
Specific Rotation: +14.5° ~ +16.5°
pH Value (1% Aqueous Solution): 5.5 - 7.0
Key Characteristics: Essential branched-chain amino acid, promotes skin cell proliferation and repair, boosts collagen synthesis, improves skin elasticity, relieves skin fatigue, mild anti-oxidation, ultra-low irritation, wide formula compatibility
Storage Condition: Sealed, dry, cool and dark ventilated environment, avoid high temperature, strong light and humid air, prevent moisture absorption and agglomeration, keep dry and clean for long-term storage
Shelf Life: 24 Months
Application: Widely used in anti-aging firming skin care products, barrier repair cosmetics, tired skin revitalization formulas, deep moisturizing maintenance and high-end functional amino acid compound skin care products
L-Leucine, Cosmetic Grade L-Leucine, Branched-Chain Amino Acid, Skin Barrier Repair, Anti-Aging, Anti-Wrinkle, Deep Moisturizing, Skin Elasticity Improvement, Mild Cosmetic Raw Material
Cosmetic Grade L-Leucine(CAS 61-90-5)
Cosmetic-grade L-Leucine is a high-purity essential branched-chain amino acid refined by advanced biological fermentation and purification technology, which is a key nutritional raw material for skin cell growth, proliferation and tissue repair. As a unique branched-chain amino acid with high biological activity, it can effectively activate the vitality of skin fibroblasts, accelerate the renewal and repair of aging and damaged skin cells, significantly improve skin dullness, sagging and tired complexion caused by cell metabolic decline.
L-Leucine acts as an important promoter of collagen and elastin synthesis, which can boost the continuous regeneration of skin fibrous tissues, fill shallow fine lines and dry lines, tighten loose skin texture, and restore skin plumpness and firm elasticity. Meanwhile, it has excellent moisturizing and water-locking activity, which can assist in building a complete skin barrier, reduce transepidermal water loss, relieve long-term dryness and rough skin texture, and maintain long-lasting skin moisture.
It owns mild endogenous antioxidant capacity, which can scavenge superficial free radicals, reduce oxidative damage and skin yellowish dullness, and brighten tired skin tone. With ultra-mild skin-friendly properties, neutral and stable pH value, zero irritation and low sensitization, it is suitable for all skin types including sensitive skin.
It can be perfectly compounded with other amino acids, peptides and moisturizing ingredients to form a synergistic repair and anti-aging system, greatly improving the comprehensive skin care efficacy of finished products. It is an indispensable core raw material for high-end anti-aging revitalizing and barrier repair skin care products.
Key Benefits
• Activate Cell Vitality, Revitalize Tired Skin: High-activity branched-chain structure activates skin cell metabolism, improves dull yellowish and tired complexion, and restores skin translucent vitality.
• Boost Collagen Synthesis, Anti-Wrinkle & Firming: Promote fibroblast proliferation and fibrous tissue regeneration, fade shallow fine lines, tighten loose skin, and enhance skin firmness and elasticity.
• Strengthen Barrier, Long-Lasting Moisturizing: Assist in repairing damaged stratum corneum, reduce water loss, relieve dry and rough skin, and maintain 24-hour moist and smooth skin condition.
• Mild Anti-Oxidation, Delay Skin Aging: Scavenge skin superficial free radicals, reduce oxidative aging damage, prevent skin dullness and sagging, and delay early skin aging.
• Ultra-Mild & Low-Sensitivity Safety: Natural essential amino acid, stable and skin-friendly pH, zero irritation, safe for sensitive skin, dry skin and fragile skin long-term maintenance.
• Strong Compatibility & Formula Stability: Stable physical and chemical properties, not easy to deteriorate; perfectly compatible with various amino acids, peptides and plant extracts to synergistically amplify skin care efficacy.
Applications
• Anti-Aging Firming Skin Care Series: Core functional raw materials for anti-aging essence, firming lotion, anti-wrinkle cream and lifting skin care products, targeting fine lines, sagging and loose skin texture.
• Tired Dull Skin Revitalizing Products: Applied in brightening toner, revitalizing serum and daily skin tone conditioning formulas to improve yellowish dullness and facial tiredness.
• Skin Barrier Repair Cosmetics: Added in sensitive skin soothing repair lotion, dry skin moisturizing cream and post-damage repair formulas to strengthen skin defense ability.
• Amino Acid Compound Skin Care: Suitable for multi-amino acid moisturizing and repairing compound formulas, balance skin nutrition, and improve overall skin quality.
• High-End Mild Functional Skin Care: Widely used in high-end nourishing anti-aging, mild repair and constant moisturizing products, suitable for all-skin daily high-quality maintenance.
Certificate Of Analysis (COA)
Test Item | Standard Specification | Test Result |
Product Name | L-Leucine | Compliant |
CAS No. | 61-90-5 | Compliant |
Appearance | White Crystalline Powder, Odorless | Compliant |
Purity | ≥99.0% | 99.74% |
Specific Rotation | +14.5° ~ +16.5° | +15.6° |
Loss on Drying | ≤0.2% | 0.04% |
Residue on Ignition | ≤0.1% | 0.02% |
Heavy Metal (Pb) | ≤10ppm | Qualified |
Arsenic (As) | ≤2ppm | Qualified |
pH Value (1% Solution) | 5.5 - 7.0 | 6.1 |
Conclusion | Conforms to cosmetic grade quality standard | Qualified |
Frequently Asked Questions (FAQ)
• Q1: What is the MOQ of cosmetic grade L-Leucine?
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 0.2%-2.5%, with stable cell revitalizing, anti-aging and moisturizing effects, mild and non-irritating to skin.
• Q4: What is the core advantage of L-Leucine?
A4: It is an essential branched-chain amino acid with high biological activity, focusing on activating skin cell metabolism, revitalizing tired dull skin and promoting collagen regeneration, with unique anti-aging maintenance advantages.
• Q5: Is L-Leucine suitable for sensitive skin formulas?
A5: Yes, it is ultra-mild natural amino acid with stable properties and zero irritation. It can safely repair and maintain sensitive and fragile skin without causing burden or sensitivity.
• 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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