Peanut Acid
AKA: Arachidic Acid, Arachis Hypogaea Acid
Plant-Derived Synthetic
Cleanser
Acid
Not Clean
Fatty acids, peanut (Arachis hypogaea) oil
CAS #
91051-35-3
Form
Liquid
Functions
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Removes Impurities
Locks In Moisture
Traditional Use
Peanut acid is a fatty acid derived from peanut oil that has been used historically in traditional skincare for its emollient properties. Modern cosmetics use it as a skin-conditioning and texture-modifying ingredient.
Skin Types
●all-skin-types
Best For
Rough Texture
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: CosIng · EWG · CIR