Sodium Hydroxystearate
molecular structure · PubChem
AKA: 13329-67-4, Octadecanoic acid, Monosodium salt, 12-Hydroxystearic acid, Sodium salt, Monosodium 12-hydroxystearate, Sodium salt (1:1)
Plant-Derived
Cleanser
Plant Oil
Not Clean
Sodium salt of Hydroxystearic Acid
Formula
C18H35NaO3
Mol. Weight
322.50
CAS #
13329-67-4
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.
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Surfactant Cleansing
Anti-Inflammatory
Antimicrobial
Fights Acne
Removes dirt and impurities
Lifts away dirt and oil
Traditional Use
Developed in the mid-20th century as a synthetic emulsifier and thickening agent derived from stearic acid (a naturally occurring fatty acid). Created to improve stability and texture in cosmetic formulations without traditional historical use.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR