C11-15 Pareth-12
AKA “C11-15 Pareth-12, Pareth-12
Surfactant
Ingredient Facts
C11-15 pareth-12
Surfactant · Cleansing · EWG: 1
Synthetic
Cleanser
Emulsifier
Clean
Alcohols, C11-15, ethoxylated (12 mol EO average molar ratio)
CAS #
173244-48-9
Form
Liquid
See origin →
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
Synthetic nonionic surfactant created for cosmetic emulsification and cleansing. Developed in the late 20th century as part of advanced surfactant technology for mild skincare products.
Skin Types
all-skin-types, gentle
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
ewg-1
medical-approval
pregnancy-nursing-safe
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
C11-15 Pareth-12
European Commission
EU Cosmetic Ingredient Database (CosIng)
C11-15 Sec-Pareth-12
European Commission
EU Cosmetic Ingredient Database (CosIng)
C12-14 Pareth-12
European Commission
EU Cosmetic Ingredient Database (CosIng)
C12-14 Sec-Pareth-12
European Commission
EU Cosmetic Ingredient Database (CosIng)
C12-15 Pareth-12
European Commission
EU Cosmetic Ingredient Database (CosIng)
C14-15 Pareth-12
European Commission
EU Cosmetic Ingredient Database (CosIng)
Disodium C12-14 Sec-Pareth-12 Sulfosuccinate
European Commission
EU Cosmetic Ingredient Database (CosIng)
PPG-6 C12-15 Pareth-12
European Commission
EU Cosmetic Ingredient Database (CosIng)
C11-15 Pareth-12
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
C11-15 Sec-Pareth-12
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Verified Jun 2026
Data: CosIng · EWG · CIR