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

PRASTERONE

Safety grade: A

A hormone-like ingredient derived from plants that helps support skin's natural moisture barrier and may improve skin firmness and elasticity over time. It works by boosting the skin's own renewal processes, making it popular in anti-aging skincare products designed to address fine lines and loss of firmness.

Graded using: COSING.

Last verified: June 9, 2026