Ammonium Laureth Sulfate
molecular structure · PubChem
AKA: (2-(dodecyloxy)ethoxy)sulfonic acid amine, 32612-48-9, PEG-(1-4) Lauryl ether sulfate, Ammonium salt, PEG-12 Lauryl ether sulfate, PEG-5 Lauryl ether sulfate
Synthetic
Cleanser
Plant Oil
Clean
Dodecan-1-ol, ethoxylated, sulfates, ammonium salts, 1-4 mol EO (average molar ratio)
Formula
C14H33NO5S
Mol. Weight
327.48
CAS #
32612-48-9, 67762-19-0
Form
Powder
State
Light yellow viscous liquid; [MSDSonline]
Functions
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Foaming
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Removes Impurities
Creates Lather
Cleansing Surfactant
Reduces Inflammation
Locks In Moisture
Removes dirt and impurities
Creates cleansing foam
Lifts away dirt and oil
Traditional Use
Developed in the mid-20th century as a polyethoxylated derivative of ammonium lauryl sulfate. Created to provide milder cleansing than traditional sulfates while maintaining surfactant efficacy.
EWG
2
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
ewg-2
medical-approval
pregnancy-nursing-safe
all-shades-safe
Regulatory Agencies
Skin Types
●all-skin-types, gentle
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed3 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR