Polydimethylsiloxy PEG/PPG-24/19 Butyl Ether Silsesquioxane
AKA “Silicone Resin, Hybrid Silicone
Synthetic
Ingredient Facts
Polydimethylsiloxy peg/ppg-24/19 butyl ether silsesquioxane
AKA: Silicone Resin, Hybrid Silicone
Synthetic · Humectant · EWG: 4
Synthetic
Humectant
Cleanser
Skin Conditioner
Silicone
Synthetic
Clean
A silky conditioning agent that helps skin retain moisture and gently cleanses while leaving a smooth, soft feel.
CAS #
68554-65-4
Form
Liquid
See origin →
Functions
Humectant
A moisture magnet. Pulls water from the air and deeper skin layers up to the surface to keep skin plump and hydrated.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Locks In Moisture
Traditional Use
A modern hybrid silicone-polyether polymer developed for advanced cosmetic formulations in the 1990s-2000s. Functions as an emulsifier and viscosity modifier in premium skincare and color cosmetics.
Skin Types
all-skin-types
Best For
General
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