Sodium Laneth Sulfate
AKA “Lanolin Sulfate, Wool Fat Derivative
Synthetic
Ingredient Facts
Sodium laneth sulfate
AKA: Lanolin Sulfate, Wool Fat Derivative
Synthetic · Cleansing · EWG: 4
Synthetic
Cleanser
Emulsifier
Skin Conditioner
Barrier Lipid
Synthetic
Clean
A gentle cleansing agent derived from lanolin that removes dirt and oil while helping to condition and soften skin. Creates a stable, smooth texture in formulas.
CAS #
68919-23-3
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.
Emulsion Stabilising
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Locks in moisture
Traditional Use
A synthetic surfactant derived from lanolin (wool fat) and developed in the mid-20th century. Created as a mild cleansing agent combining the conditioning properties of lanolin with modern surfactant chemistry.
Skin Types
all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
Allergen Warning
⚠️ Lanolin (Wool)
EWG
4
CIR
Safe w/Qualifications
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: CosIng · EWG · CIR