CROSSPEPTIDE-1 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

CROSSPEPTIDE-1

Safety grade: A

This is a specially designed protein fragment that works to strengthen and support your skin's natural structure. It helps improve skin firmness and elasticity by encouraging the skin to maintain its healthy appearance. You'll find it in serums and creams aimed at reducing the visible signs of aging.

Graded using: COSING.

Last verified: June 9, 2026