Stearamidopropyl Dimethicone
AKA: Stearamide Silicone, Silicone Emollient
Plant-Derived
Occlusive
Silicone
Not Clean
Siloxanes and silicones, dimethyl, methyl 3-[(1-oxooctadecyl)amino]propyl
CAS #
227200-31-9
Form
Liquid
Functions
Anticorrosive
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Prevents Corrosion
Creates Protective Barrier
Creates protective layer
Prevents product degradation
Traditional Use
Developed in the late 20th century as a hybrid silicone-fatty acid ingredient designed to improve hair conditioning and detangling properties while providing thermal protection.
EWG
4
CIR
Safe as used
Pregnancy
Yes
Restricted By
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Agencies
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
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.
Verified Jun 2026
Data: CosIng · EWG · CIR