murphySodium Isostearate
AKA: Sodium isooctadecanoate, ISOOCTADECANOIC ACID, SODIUM SALT (1:1), SODIUM ISOSTEARATE [INCI]
Plant-Derived
Cleanser
Emulsifier
Clean
OriginTypically derived from coconut, palm kernel, or soybean oils through saponification processes. Produced by hydrogenating isostearic acid and subsequently neutralizing it with sodium hydroxide.
Isooctadecanoic acid, sodium salt
Formula
C18H35NaO2
Mol. Weight
306.50
CAS #
64248-79-9
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
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.
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Surfactant Cleansing
Surfactant Emulsifying
Anti-Inflammatory
Antimicrobial
Fights Acne
Removes dirt and impurities
Lifts away dirt and oil
Mixes oil and water
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR