Phenylethyl resorcinol

Phenylethyl resorcinol (CAS 85-27-8), also known as phenethyl resorcinol, is a synthetic resorcinol derivative used primarily as a skin-brightening and depigmentation active in cosmetic formulations.

It functions by inhibiting tyrosinase activity, reducing melanin synthesis without the irritation profile associated with older brightening agents. In personal care, it is formulated into serums and creams.

These products target hyperpigmentation, uneven skin tone, and post-inflammatory discoloration, often positioned as an alternative to hydroquinone. Polymer and plastics manufacturers incorporate it as an antioxidant.

It acts as a UV stabilizer, protecting materials from oxidative degradation and light-induced discoloration during processing and end-use. In pharmaceutical contexts, it serves as a chemical intermediate.

It is used in the synthesis of active compounds where a resorcinol backbone is required. Its antioxidant activity also supports preservation functions in formulations where oxidative stability is a concern.

Phenylethyl resorcinol is supplied as a white to off-white crystalline powder. It is available in cosmetic-grade and technical-grade specifications for various industrial applications.

Cosmetic-grade material is subject to purity and heavy metal limits aligned with personal care industry standards. Packaging typically ranges from small quantities for R&D to kilogram-scale bulk.