Lanolin Acid
AKA “Lanolin fatty acids, Wool wax acids”
Acid
Ingredient Facts
Lanolin acid
AKA: Lanolin fatty acids, Wool wax acids
Acid · Emollient · EWG: 1
Synthetic
Emollient
Cleanser
Emulsifier
Skin Conditioner
Barrier Lipid
Acid
Clean
Fatty acids, lanolin
CAS #
68424-43-1
Form
Liquid
State
Solid
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.
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
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.
Locks In Moisture
Traditional Use
Derived from lanolin (wool grease), used historically since the late 19th century when lanolin processing became refined. The fatty acid component of lanolin was isolated for use as an emulsifier and skin conditioning agent in cosmetics.
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
Lanolin Acid
European Commission
EU Cosmetic Ingredient Database (CosIng)
Lanolin Acid
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Fractioning and Compared (1)H NMR and GC-MS Analyses of Lanolin Acid Components.
Morano C, Dei Cas M, Bergamaschi RF, Palmisano E, Pallavicini M et al.
Molecules (Basel, Switzerland), 2023
Verified Jun 2026
Data: CosIng · EWG · CIR