TETRAPEPTIDE-28 ARGININAMIDE is graded A (Safe) by Expert·ING, based on COSING regulatory data.
TETRAPEPTIDE-28 ARGININAMIDE
Safety grade: A
This is a small chain of amino acids (the building blocks of proteins) that is designed to strengthen and protect hair. It works by binding to hair fibers to improve their structure and resilience.
This ingredient conditions hair by fortifying its structure, reducing breakage, and improving smoothness and shine.
Graded using: COSING.
Last verified: May 26, 2026
Other Hair Conditioning ingredients
- GLYCERIN — Grade B
- COCAMIDOPROPYL BETAINE — Grade A
- PANTHENOL — Grade A
- CAPRYLYL GLYCOL — Grade A
- SALICYLIC ACID — Grade C**
- CYCLOPENTASILOXANE — Grade C**
- BEHENTRIMONIUM CHLORIDE — Grade A
- MALTODEXTRIN — Grade A