Dimethiconol/Stearyl Methicone/Phenyl Trimethicone Copolymer
AKA “Silicone Copolymer
Synthetic
Ingredient Facts
Dimethiconol/stearyl methicone/phenyl trimethicone copolymer
AKA: Silicone Copolymer
Synthetic · Light Stabilizer · EWG: 4
Plant-Derived Synthetic
Skin Conditioner
Synthetic
Clean
Polymer formed from poly[oxy(methylstearyl)silylene, .alpha.-trimethylsilyloxy, .omega.-trimethylsilyl, poly[oxy(phenyl-trimethylsilyloxy)silylene,.alpha.-trimethylsilyloxy,.omega.-trimethylsilyl, and poly[oxy(dimethylsilylene),.alpha.-hydro,.omega.-hydro Science: Origin: Botanic/Natural | Functions: Light Stabilizer, Skin Conditioning Safety Ratings: CIR: Safe as used
Form
Liquid
See origin →
Functions
Light Stabilizer
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
Shields from UV damage
Traditional Use
A specialized silicone copolymer created in the late 20th century to combine conditioning, water-proofing, and sensory benefits in premium cosmetic formulations, particularly in color cosmetics and hair care.
Skin Types
all-skin-types
Best For
Dryness
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Insufficient
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USAunder review
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: CosIng · EWG · CIR