DECAPEPTIDE-42 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

DECAPEPTIDE-42

Safety grade: A

This anti-aging protein fragment works to improve skin firmness and reduce the appearance of fine lines by supporting your skin's natural structure. It helps boost collagen production, making skin look smoother and more youthful over time. You'll typically find it in serums and moisturizers designed to combat signs of aging.

Graded using: COSING.

Last verified: June 9, 2026