Hydroxybenzomorpholine
AKA “26021-57-8, 3, 4-Dihydro-2H-1, 4-benzoxazin-6-ol, 6-Hydroxybenzomorpholine, 2H-1, 4-Benzoxazin-6-ol, 4-dihydro-, 77OXT3492A, EINECS 247-415-5, DTXSID20180671, 4-DIHYDRO-2H-BENZO-(B)(1, 4)OXAZIN-6-OL, 4-DIHYDRO-6-HYDROXY-1, 4(2H)-BENZOXAZINE
Ingredient
Ingredient Facts
Hydroxybenzomorpholine
AKA: 26021-57-8, 3, 4-Dihydro-2H-1, 4-benzoxazin-6-ol, 6-Hydroxybenzomorpholine, 2H-1, 4-Benzoxazin-6-ol, 4-dihydro-, 77OXT3492A, EINECS 247-415-5, DTXSID20180671, 4-DIHYDRO-2H-BENZO-(B)(1, 4)OXAZIN-6-OL, 4-DIHYDRO-6-HYDROXY-1, 4(2H)-BENZOXAZINE
Ingredient · Hair Dyeing · EWG: 5
Synthetic
Not Clean
3,4-Dihydro-2H-1,4-benzoxazin-6-ol
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
Pregnancy & Breastfeeding Safe
Caution
EWG
5
CIR
Safe as used
Pregnancy
Caution
CIR Safety Findings
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUpermitted
JAPANpermitted
CANADApermitted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR