SOLUBLE KERATIN is graded A (Safe) by Expert·ING, based on COSING regulatory data.
SOLUBLE KERATIN
Safety grade: A
Soluble keratin is a protein derived from hair, wool, or nails that has been broken down into smaller pieces so it can dissolve in water. It helps repair and strengthen damaged hair by filling in gaps and coating the hair shaft.
This ingredient conditions and strengthens hair by coating the hair shaft, reducing frizz, and improving shine and elasticity to make hair feel smoother and more manageable.
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