TETRAPEPTIDE-64 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

TETRAPEPTIDE-64

Safety grade: A

A lab-created protein fragment designed to help firm and smooth the skin by supporting its natural structure. This ingredient works to reduce the appearance of fine lines and promote a more youthful-looking complexion when used in skincare products.

Graded using: COSING.

Last verified: June 9, 2026