4-(1-Phenylethyl)resorcinol

4-(1-Phenylethyl)resorcinol is a skin lightening agent used in cosmetics. It works by inhibiting the production of melanin, the pigment that gives skin its color. This helps reduce the appearance of dark spots, hyperpigmentation and uneven skin tone. 4-(1-Phenylethyl)resorcinol is considered safe for cosmetic use and is approved for use in several countries.