Butylated Hydroxyanisole

AKA: BHA, 6-di-tert-butyl-4-methoxyphenol, Butylated methoxyphenol
Synthetic
Skin Conditioner
Not Clean
OriginSynthesized from 4-methoxyphenol or para-methoxyphenol precursors through chemical synthesis in industrial laboratories. Produced by alkylation reactions that add butyl groups to the methoxyphenol base structure.
Butylated Hydroxyanisole is a cosmetic ingredient. Assessed as safe by the CIR.
Formula
C11H16O2
Mol. Weight
180.24
CAS #
25013-16-5
Form
Powder
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
No
Functions
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Antioxidant Protection
Locks In Moisture
Fights Bacteria
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory0 listings
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
4
CIR
Safe as used
Pregnancy
No
CIR Safety Findings
Not Phototoxic
Human test found no phototoxicity in the CIR safety assessment (CIR 890)
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR