Laureth-100

Laureth-100 molecular structure
molecular structure · PubChem
AKA: Polyoxyethylene 100 lauryl ether, Lauryl PEG-100
Synthetic
Cleanser
Solvent
Not Clean
OriginDerived from coconut or palm kernel oil-derived lauryl alcohol as the starting material. Produced through ethoxylation, where ethylene oxide is chemically bonded to lauryl alcohol approximately 100 times.
Laureth-100 is a cosmetic ingredient used as solvent, surfactant - cleansing. Assessed as safe by the CIR.
CAS #
9002-92-0
Form
Liquid
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Solvent
Dissolves other ingredients so they distribute evenly in the formula. Often the invisible "base" everything else is mixed into.
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Dissolves Ingredients
Cleansing Surfactant
Lifts away dirt and oil
Dissolves other ingredients
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
4
CIR
Safe as used
Pregnancy
Yes
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: CosIng · EWG · CIR