TRIPEPTIDE-55 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

TRIPEPTIDE-55

Safety grade: A

A small protein fragment designed to help boost skin's natural firmness and elasticity. This ingredient works by signaling skin cells to support collagen production, which can help reduce the appearance of fine lines and sagging over time. It's commonly used in anti-aging serums and moisturizers.

Graded using: COSING.

Last verified: June 9, 2026