Phytosteryl Butyrate

Phytosteryl Butyrate molecular structure
molecular structure · PubChem
AKA: Plant sterol butyrate, Phytosterol butyrate
Synthetic
Skin Conditioner
Hair Care
Not Clean
OriginPhytosterols, derived from plant sources like soybean and rapeseed oils, are esterified with butyric acid. The esterification reaction combines phytosterol with butyric acid using catalytic or chemical coupling methods.
Phytosteryl Butyrate is the ester of Phytosterol and Butyric Acid
CAS #
-
Form
Wax
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
Functions
Hair Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Locks in moisture
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
4
CIR
Safe as used
Pregnancy
Yes
Concentration Guide
CIR lists it as not reported to be in use.
CIR · report published 2013
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: CosIng · EWG · CIR