PPG-25 Dimethicone
AKA: Silicone, Polypropylene Glycol Dimethicone
Synthetic
Cleanser
Emulsifier
Skin Conditioner
Hair Care
Silicone
Not Clean
PPG-25 Dimethicone is the polypropylene glycol derivative of Dimethicone containing an average of 25 moles of propylene oxide.
CAS #
68957-00-6
Form
Liquid
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.
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Locks in moisture
Traditional Use
Developed in the mid-20th century as a silicone-based polymer combining polypropylene glycol with dimethicone. Used in modern cosmetics since the 1950s as a conditioning agent and skin protectant with improved spreadability.
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
Dryness
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: CosIng · EWG · CIR