Overview
Phenylethyl Resorcinol is a synthetic phenolic derivative primarily recognized for its efficacy in skin care. Developed as a safer alternative to hydroquinone, it inhibits melanin production by targeting tyrosinase activity. Its molecular structure combines resorcinol and phenylethyl groups, enhancing stability and bioavailability in cosmetic formulations. The compound is patented under trade names like SymWhite® 377 and is a key ingredient in premium brightening serums, creams, and lotions. Due to its potency, it is typically used at concentrations of 0.2-0.5% in finished products.
Physical and Chemical Properties
Phenylethyl Resorcinol presents as a fine crystalline powder with moderate solubility in organic solvents. Its melting point (86-88°C) and stability under cosmetic pH ranges (3-8) make it suitable for diverse formulations. The compound exhibits strong UV absorption, contributing to its photo-protective effects in skincare. Chemically, it is resistant to oxidation but may degrade under prolonged exposure to high temperatures or strong acids/bases. Formulators often combine it with antioxidants like vitamin E to enhance shelf life.
Main Applications
The primary use of Phenylethyl Resorcinol is in cosmetic formulations targeting hyperpigmentation, age spots, and uneven skin tone. It is a favored ingredient in Asia-Pacific markets, where skin-lightening products are in high demand. Clinical studies show it outperforms kojic acid and arbutin in efficacy. Beyond cosmetics, it is explored in medical dermatology for post-inflammatory hyperpigmentation treatment. Its anti-inflammatory properties also make it valuable in anti-aging products designed to reduce redness and improve skin texture.
Safety and Storage
Regarded as safe for topical application, Phenylethyl Resorcinol has low irritation potential at recommended concentrations. However, manufacturers must adhere to ISO Good Manufacturing Practices to avoid contamination with heavy metals or residual solvents. Proper storage involves airtight containers with desiccants to prevent moisture absorption. Bulk quantities should be kept at temperatures below 25°C. Stability tests indicate a shelf life of 24 months when stored correctly.
B2B Procurement Guide
When sourcing Phenylethyl Resorcinol, prioritize suppliers with ISO 22716 (cosmetic GMP) certification. Request Certificates of Analysis (CoA) confirming purity (≥98%), heavy metal content (<10 ppm), and microbiological safety. Due to counterfeit risks, cross-verify CAS numbers with independent labs. Leading producers are based in Germany, China, and India. MOQs typically start at 1 kg for R&D and 10 kg for commercial batches. Negotiate bulk discounts for orders exceeding 50 kg. Consider incoterms and cold-chain logistics for international shipments.
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