TETRAPEPTIDE-58 DIMER is graded A (Safe) by Expert·ING, based on COSING regulatory data.

TETRAPEPTIDE-58 DIMER

Safety grade: A

A synthetic peptide complex designed to help firm and smooth the skin's appearance by supporting its structural proteins. When used in skincare products, it may help reduce the look of fine lines and promote a more lifted appearance over time.

Graded using: COSING.

Last verified: June 9, 2026