TRIPEPTIDE-126 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

TRIPEPTIDE-126

Safety grade: A

A lab-created protein fragment made of three amino acids, this ingredient works to help strengthen and firm the skin by supporting its natural structure. It's commonly used in anti-aging skincare products to reduce the appearance of fine lines and improve overall skin texture and elasticity.

Graded using: COSING.

Last verified: June 9, 2026