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Hydroxypropyldimethicone
AKA “HPDMS, Dimethicone hydroxypropyl”
Skin Conditioning
Ingredient Facts
Hydroxypropyldimethicone
AKA: HPDMS, Dimethicone hydroxypropyl
Skin Conditioning · Hair Conditioning · EWG: 4
Synthetic
Skin Conditioner
Hair Care
Silicone
Not Clean
Siloxanes and silicones, Dimethyl, 3-Hydroxypropyl Methyl
CAS #
102782-61-6
Form
Liquid
See origin →
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
Traditional Use
Developed in the late 20th century as a modified silicone polymer combining hydroxypropyl and dimethicone technologies. Created to provide improved water solubility and conditioning properties compared to unmodified silicones.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: CosIng · EWG · CIR