PENTAPEPTIDE-109 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

PENTAPEPTIDE-109

Safety grade: A

A laboratory-created protein fragment that works to strengthen and firm skin by boosting its natural support structure. It helps reduce the appearance of fine lines and sagging by encouraging skin to maintain its elasticity and bounce. Commonly found in anti-aging serums and creams.

Graded using: COSING.

Last verified: June 9, 2026