Lauroyl Ethyltrimonium Methosulfate
AKA “Surfactive V 12, UNII-ZXR9B4308M, Lauroyl ethyltrimonium methosulfate [INCI], Ethanaminium, methyl sulfate (1:1), RefChem:152521
Synthetic
Ingredient Facts
Lauroyl ethyltrimonium methosulfate
AKA: Surfactive V 12, UNII-ZXR9B4308M, Lauroyl ethyltrimonium methosulfate [INCI], Ethanaminium, Methyl sulfate (1:1), RefChem:152521
Synthetic · Cleansing · EWG: 4
Synthetic
Cleanser
Plant Oil
Synthetic
Clean
A gentle cleansing agent that removes dirt and oil while maintaining the natural balance of skin and hair. Derived from coconut oil.
Formula
C18H39NO6S
Mol. Weight
397.60
CAS #
851385-89-2
Form
Powder
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.
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Surfactant Cleansing
Moisturizing
Locks in moisture to keep skin soft and supple throughout the day
Strengthens Barrier
Removes dirt and impurities
Lifts away dirt and oil
Traditional Use
Synthetic quaternary ammonium compound developed in the mid-20th century as a conditioning and anti-static agent for haircare products, designed to replace natural conditioning ingredients.
Skin Types
all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Insufficient
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USAunder review
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR