Diphenylsiloxy Phenyl Trimethicone

AKA: Phenyl Silicone, Silicone Resin

Synthetic

Skin Conditioner

Hair Care

Clean

Silicones and siloxanes, diphenyl, trimethylsilyloxy phenyl, trimethylsilyl terminated

Form

Liquid

Functions

Antifoaming

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

A phenyl-substituted silicone polymer developed in the late 20th century for cosmetics. Designed to provide improved water resistance and enhanced sensory properties compared to standard dimethicone.

EWG

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

Regulatory Agencies

EWG CIR FDA EU COSING Health Canada

Skin Types

●all-skin-types

Best For

Dryness

Pregnancy & Breastfeeding Safe

Yes

The paper trail

🔬Peer-reviewednone on file

⚖️Regulatory1 listing →

🛡️Safety-assessed2 reviews →

Counts, not a verdict. A listing isn't a study. The trail, you decide.

Verified Jun 2026

Data: CosIng · EWG · CIR