DIHYDROXYBIPHENYL is graded A (Safe) by Expert·ING, based on COSING regulatory data.

DIHYDROXYBIPHENYL

Safety grade: A

Dihydroxybiphenyl is a synthetic chemical compound that helps brighten and even out skin tone. It works by reducing the appearance of dark spots and discoloration while providing protective benefits to the skin.

This ingredient is used in skincare products to help lighten dark spots and hyperpigmentation while also protecting skin from environmental damage and oxidative stress.

Graded using: COSING.

Last verified: May 26, 2026