TETRAPEPTIDE-83 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

TETRAPEPTIDE-83

Safety grade: A

This ingredient is a lab-created protein fragment designed to help improve skin firmness and reduce the appearance of fine lines. It works by supporting your skin's natural structure and elasticity. You'll typically find it in anti-aging serums and creams meant to enhance skin texture and resilience.

Graded using: COSING.

Last verified: June 9, 2026