GUANYLCYSTAMINE HBR is graded A (Safe) by Expert·ING, based on COSING regulatory data.
GUANYLCYSTAMINE HBR
Safety grade: A
Guanylcystamine HBR is a synthetic amino acid derivative that helps protect and strengthen the skin's natural barrier. It works by supporting the skin's defense mechanisms and improving overall skin resilience.
This ingredient is used in skincare products to condition and protect the skin by enhancing its moisture retention and supporting its natural protective functions.
Graded using: COSING.
Last verified: May 26, 2026
Other Skin Conditioning ingredients
- TOCOPHEROL — Grade A
- PROPYLENE GLYCOL — Grade A**
- XANTHAN GUM — Grade A
- DIMETHICONE — Grade A
- TOCOPHERYL ACETATE — Grade A
- PANTHENOL — Grade A
- CAPRYLYL GLYCOL — Grade A
- ETHYLHEXYLGLYCERIN — Grade A