DIPEPTIDE-17 HYDROXYPROLINE is graded A (Safe) by Expert·ING, based on COSING regulatory data.

DIPEPTIDE-17 HYDROXYPROLINE

Safety grade: A

This ingredient is a small protein fragment designed to support your skin's structure and firmness. It works by helping to strengthen and maintain collagen, the natural protein that keeps skin looking plump and youthful. You'll typically find it in anti-aging serums and creams.

Graded using: COSING.

Last verified: June 9, 2026