TETRAPEPTIDE-127 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

TETRAPEPTIDE-127

Safety grade: A

A lab-created protein fragment that helps firm and smooth skin by supporting its natural structure. It works to reduce the appearance of fine lines and wrinkles, making skin look more youthful and refreshed. This ingredient is commonly used in anti-aging serums and creams.

Graded using: COSING.

Last verified: June 9, 2026