Hydroxybenzomorpholine
molecular structure · PubChem
AKA: 26021-57-8, 3, 4-Dihydro-2H-1, 4-benzoxazin-6-ol, 6-Hydroxybenzomorpholine, 2H-1, 4-Benzoxazin-6-ol, 4-DIHYDRO-2H-BENZO-(B)(1, 4)OXAZIN-6-OL, 4-DIHYDRO-6-HYDROXY-1, 4(2H)-BENZOXAZINE
WHAT IS IT?
Synthetic
Not Clean
3,4-Dihydro-2H-1,4-benzoxazin-6-ol
Formula
C8H9NO2
Mol. Weight
151.16
CAS #
26021-57-8
WHAT DOES IT DO?
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.
IS IT CLEAN?
EWG
5
CIR
Safe as used
Pregnancy
Caution
CIR Safety Findings
medical-approval
all-shades-safe
Regulatory Status
USA
✔ permitted
EU
✔ permitted
JAPAN
✔ permitted
CANADA
✔ permitted
Regulatory Agencies
EWG
CIR
FDA
EU COSING
Health Canada
IS IT FOR ME?
Skin Types
●
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Caution
CAN I TRUST THIS?
The paper trail
🔬
Peer-reviewed
1 paper →
⚖️
Regulatory
1 listing →
🛡️
Safety-assessed
2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR