Hydroxybenzomorpholine
AKA “4-benzoxazin-6-ol, 6-Hydroxybenzomorpholine, 4-Benzoxazin-6-ol, EINECS 247-415-5, 4)OXAZIN-6-OL, 4(2H)-BENZOXAZINE”
Synthetic
Ingredient Facts
Hydroxybenzomorpholine
AKA: 4-benzoxazin-6-ol, 6-Hydroxybenzomorpholine, 4-Benzoxazin-6-ol, EINECS 247-415-5, 4)OXAZIN-6-OL, 4(2H)-BENZOXAZINE
Synthetic · Hair Dyeing · EWG: 4
Synthetic
Synthetic
Clean
A synthetic ingredient that helps hair color stay vibrant and true, working to ensure even, lasting color distribution throughout your hair.
Formula
C8H9NO2
Mol. Weight
151.16
CAS #
26021-57-8
See origin →
Functions
Hair Dyeing
Colors Hair
Traditional Use
A synthetic preservative and antioxidant developed in the 20th century for cosmetics, created to provide antimicrobial and shelf-stabilizing properties in modern skincare and haircare products.
Skin Types
●all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Caution
Final Report on the Safety Assessment of Hydroxybenzomorpholine
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
Hydroxybenzomorpholine
European Commission
EU Cosmetic Ingredient Database (CosIng)
Hydroxybenzomorpholine
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR