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Phenylethyl Resorcinol Powder Purity ≧99% | Cas# 85-27-8 | C14H14O2 | White Powder | Phenylethyl resorcinol is a whitening ingredient, has a strong antioxidant effect, strongly inhibits the activity of tyrosinase, thereby reducing the production of melanin.

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Phenylethyl resorcinol (4-(1-phenylethyl)1,3-benzenediol) (PR) is a new whitening agent that has been found to have the ability to inhibit tyrosinase activity. Synthetic antioxidants are often seen in skin-brightening products.

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Phenylethyl resorcinol, also known as SymWhite 377, was developed by Symrise researchers and used as a brightening ingredient in skincare products, hair brightening products, and cosmetics.

According to research, it is an antioxidant that is believed to effectively affect the formation of pigmentation and help solve skin discoloration and uneven skin tone.

This ingredient (phenethyl resorcinol) whitens the skin by inhibiting the synthesis of melanin in B16V cells. In addition, phenethyl resorcinol (PER, 4-(1-phenylethyl)1,3-benzenediol) has an antioxidant effect, can provide antioxidant protection, can increase skin elasticity, and reduce UV-induced pigmentation and hair Pigmentation, resist the oxidative stress of free radicals in the environment.

According to reports, this raw material is safe and stable. The recommended value is 0.1–1.0%. The formulator should use this ingredient at a pH of 4-5 and avoid using it with Carbomer, as the pH neutralization will exceed 5.5. Preferred thickeners/stabilizers include ammonium acryloyl dimethyl taurate/VP copolymer, xanthan gum, arabinogalactan, and hydroxyethylcellulose, which are stable at low pH.

Ultraviolet radiation may cause discoloration of raw materials. UV absorbers such as benzophenone 3 improve color stability; in addition, adding about 0.1% of a chelating agent to formulations containing resorcinol can help prevent discoloration.

Formulators must check the compatibility of nitrogen-containing active substances (such as amino acids, urea, and protein) with the raw materials before adding them to the formula. It should also be noted that resorcinol may cause the instability of certain fragrances.

Phenylethyl resorcinol (PR) has been widely used in the personal care industry as a new skin-lightening ingredient. It is a synthetic compound, partly derived from the natural whitening compound in the bark of Scots pine, and is considered a reliable whitening agent.

Additional information

Product Name

Phenylethyl Resorcinol/SymWhite 377



Molecular Formula



4-(1-phenylethyl)benzene-1,3-diol; 4-(1-phenylethyl)-1,3-Benzenediol; 4-(alpha-Methylbenzyl)resorcinol


White Powder

Grade Standard

Cosmetic Grade


Purity ≧99%


Cosmetic Ingredients, Whitening Ingredients, Skincare Products, Wash Products;


Available For Your Reference

Shipping Details

Customized, FOB, CIF, D2D

Additional Service

Supply, ODM/OEM, Wholesale


Kept in dry, cool, and shaded place with original packaging, avoid moisture, store at room temperature.

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Our factory

Green Stone Swiss Co ., Limited has always focused on the supply of beauty, nutritional, and healthy ingredients ( supply). We mainly devote to the sale popularizing and research and services of natural products and promoting the development of the natural herbal industry.

Xiamen, Shanghai; China

Business Type
Manufacturer, Marketing
Industry Experience

Over 20 Years of Supply Experience

Main Markets
  • North America 51.00%
  • Western Europe: 10.00%
  • Northern Europe: 10.00%
Business Advantage

Support Formula Customization/ODM/OEM




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