TETRAPEPTIDE-113 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

TETRAPEPTIDE-113

Safety grade: A

This ingredient is a short chain of amino acids (the building blocks of proteins) that works to help firm and smooth the skin's appearance. It's designed to support skin elasticity and reduce the look of fine lines, making it a common choice in anti-aging skincare products.

Graded using: COSING.

Last verified: June 9, 2026