C9-11 Pareth-8
molecular structure · PubChem
AKA: Nonionic Surfactant
Synthetic
Cleanser
Emulsifier
Plant Oil
Not Clean
Alcohols, C9-11, ethoxylated (8 mol EO average molar ratio)
CAS #
68439-46-3
Form
Liquid
Functions
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.
Cleansing Surfactant
Emulsifier
Removes Impurities
Mixes Oil & Water
Traditional Use
Nonionic synthetic surfactant developed as part of the pareth family in the mid-20th century. Used for emulsification and solubilization in creams, lotions, and cleansers.
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