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

ERGOSTEROL ENDOPEROXIDE

Safety grade: A

Ergosterol endoperoxide is a compound derived from ergosterol, a sterol found in fungi and yeast. It's used in skincare products to help brighten skin tone and maintain moisture.

This ingredient works to lighten dark spots and uneven skin tone while helping the skin retain moisture and improving overall skin texture and appearance.

Graded using: COSING.

Last verified: May 26, 2026