Cosmetic Grade L-Phenylalanine(CAS 63-91-2)
Product Name: L-Phenylalanine
Abbreviation: L-Phe
Chemical Name: L-2-Amino-3-Phenylpropanoic Acid
CAS No.: 63-91-2
Grade: Cosmetic Grade (Skin Care Special)
Purity: ≥99.0%
Appearance: White Crystalline Powder, Odorless, Slightly Bitter Taste
Molecular Weight: 165.19
Molecular Formula: C₉H₁₁NO₂
MOQ (Minimum Order Quantity): 1KG
Solubility: Easily soluble in hot water, slightly soluble in cold water and ethanol, insoluble in organic solvents, stable dissolution, clear solution without impurities
Specific Rotation: -33.0° ~ -35.0°
pH Value (1% Aqueous Solution): 5.0 - 6.5
Key Characteristics: Aromatic essential amino acid, natural melanin regulator, brighten and whiten skin, uniform skin tone, improve pigmentation, mild and non-irritating, excellent formula stability, strong compatibility
Storage Condition: Sealed, dry, cool and dark ventilated environment, avoid high temperature, humid air and direct sunlight, prevent moisture absorption, agglomeration and efficacy attenuation
Shelf Life: 24 Months
Application: Widely used in brightening and whitening essence, pigmentation repairing products, freckle-removing formulas, dullness improving skin care products and mild functional cosmetics
L-Phenylalanine, Cosmetic Grade L-Phenylalanine, Skin Brightening Amino Acid, Melanin Inhibitor, Skin Tone Evenness Agent, Mild Cosmetic Additive, Skin Repair Raw Material
Cosmetic Grade L-Phenylalanine(CAS 63-91-2)
Cosmetic-grade L-Phenylalanine is a high-purity aromatic essential amino acid refined by advanced biological fermentation technology, which is a core natural raw material for skin brightening and pigment regulation.
With a unique benzene ring molecular structure, it has excellent skin affinity and transdermal permeability, which can effectively act on the skin's melanin metabolism link. It can inhibit the abnormal activation of tyrosinase, block the excessive production and deposition of melanin, gradually fade facial freckles, sunburn and post-inflammatory pigmentation, and fundamentally improve uneven skin tone, yellowish and dull complexion.
Different from irritating whitening ingredients, L-Phenylalanine is derived from natural amino acids, with mild acidic pH close to human skin, no irritation and no burden on the skin. It can promote normal skin cell metabolism, accelerate the excretion of aged pigment cells, make skin tone translucent and bright, and simultaneously repair subtle skin texture.
It has stable formula activity, is not easy to oxidize and deteriorate, and can be perfectly compounded with whitening, moisturizing and antioxidant ingredients. It is a high-quality mild functional raw material for high-end brightening, whitening and pigment repairing skin care products.



Key Benefits
• Natural Melanin Inhibition & Fading Pigment: Effectively inhibit tyrosinase activity, block melanin synthesis and deposition, fade sun spots, freckles and inflammatory pigmentation, improve skin discoloration.
• Brighten Skin & Even Complexion: Accelerate skin pigment metabolism excretion, improve yellowish, dull and uneven skin tone, restore skin translucent and bright luster, create uniform skin texture.
• Mild & Non-Irritating Whitening: Natural amino acid system, weak acid skin-friendly pH value, no irritation, no redness and stinging, suitable for long-term whitening maintenance of sensitive skin.
• Repair Subtle Skin Texture: Participate in skin nutrient metabolism, activate cell vitality, improve rough and dry skin, refine pores, and make skin delicate and smooth.
• Ultra-Stable Formula Activity: High-purity low-impurity refining process, resistant to oxidation and discoloration in conventional formulas, stable long-term efficacy, extend finished product shelf life.
• Strong Compatibility & Synergistic Effect: Perfectly compatible with nicotinamide, VC derivatives, arbutin and other whitening ingredients, significantly enhance brightening and freckle-removing effects with superposition efficacy.
Applications
• Brightening & Whitening Skin Care Series: Core functional raw materials for whitening essence, brightening toner and whitening lotion, improve dull and yellow skin, brighten overall complexion.
• Pigment Repair & Freckle-Removing Products: Applied in freckle-removing cream, acne mark repair essence and sunburn repair products, fade various pigmentation and stabilize skin tone.
• Daily Anti-Dullness Maintenance Products: Added in daily moisturizing and brightening skin care formulas to accelerate pigment metabolism, prevent melanin deposition, and maintain bright skin state.
• Mild Sensitive Skin Whitening Formula: Suitable for mild whitening skin care products for sensitive skin, avoid irritation caused by traditional whitening ingredients, and achieve safe brightening effect.
• High-End Uniform Skin Tone Functional Cosmetics: Used in high-end skin tone adjusting and brightening formulas to refine skin texture and create clear and translucent skin.
Certificate Of Analysis (COA)
Test Item | Standard Specification | Test Result |
Product Name | L-Phenylalanine | Compliant |
CAS No. | 63-91-2 | Compliant |
Appearance | White Crystalline Powder, Odorless | Compliant |
Purity | ≥99.0% | 99.73% |
Specific Rotation | -33.0° ~ -35.0° | -34.2° |
Loss on Drying | ≤0.2% | 0.07% |
Residue on Ignition | ≤0.1% | 0.03% |
Heavy Metal (Pb) | ≤10ppm | Qualified |
Arsenic (As) | ≤2ppm | Qualified |
pH Value (1% Solution) | 5.0 - 6.5 | 5.6 |
Conclusion | Conforms to cosmetic grade quality standard | Qualified |
Frequently Asked Questions (FAQ)
• Q1: What is the MOQ of cosmetic grade L-Phenylalanine? 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%-2.0%, with stable brightening and pigment-fading effects, mild and non-irritating to skin.
• Q4: What is the core advantage of L-Phenylalanine in skin care? A4: It is a natural mild whitening amino acid, which inhibits melanin production from the source, fades various pigmentation, evens skin tone without damaging the skin barrier, suitable for long-term whitening maintenance.
• Q5: Is it suitable for sensitive skin whitening formulas? A5: Yes, it has ultra-mild properties, no irritation and low sensitization, perfectly solving the pain point of easy irritation of traditional whitening ingredients for sensitive skin.
• 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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