Lauryl Isopentyl-PEG/PPG-18/18 Methicone

AKA: Silicone Surfactant

Synthetic

Cleanser

Emulsifier

Silicone

Not Clean

Lauryl Isopentyl-PEG/PPG-18/18 Methicone is the copolymer formed by the reaction of Methicone with dodecene and a dimethyallyl-terminated polyethylene oxide/polypropylene oxide copolymer

CAS #

1112315-26-0

Form

Liquid

Functions

Emulsifying

Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.

Emulsifier

Antioxidant Protection

Locks In Moisture

Reduces Inflammation

Mixes Oil & Water

Traditional Use

A modern synthetic emulsifier and conditioning agent developed in the late 20th century by combining silicone chemistry with polyethylene glycol technology for improved spreadability and skin feel in cosmetics.

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

General

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