TETRAPEPTIDE-63 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

TETRAPEPTIDE-63

Safety grade: A

A laboratory-created peptide made of four amino acids linked together, this ingredient is designed to help improve skin's appearance by potentially supporting firmness and elasticity. It works by signaling skin cells to maintain or enhance their structure, making it a common addition to anti-aging and lifting products.

Graded using: COSING.

Last verified: June 9, 2026