Amodimethicone Hydroxystearate

Amodimethicone Hydroxystearate molecular structure
molecular structure · PubChem
AKA: Amodimethicone hydroxystearic acid salt
Plant-Derived
Skin Conditioner
Hair Care
Not Clean
OriginDerived from dimethicone, a siloxane polymer, combined with hydroxystearic acid through esterification. Synthesized by chemically bonding hydroxystearate groups to the silicone backbone via ester linkage.
Siloxanes and silicones, 3-[(2-aminoethyl)amino]propyl methyl, dimethyl, hydroxy terminated, 12-hydroxyoctandecanoate (salt)
CAS #
299186-05-3
Form
Liquid
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.
Conditions Hair
Softens and detangles hair
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed3 reviews →
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 2022
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: CosIng · EWG · CIR