Stearic Acid
Approved
Fatty Acid
Also Known As
Octadecanoic Acid
CAS Number
57-11-4
What It Does
Emulsifier; Emollient; Surfactant
Why Oh Daisey Rates It This Way
A naturally occurring fatty acid used to stabilize emulsions and improve product texture. It is widely regarded as safe for cosmetic use.
Evidence Level
Strong
Sources
- https://www.cir-safety.org/; https://cosmetics.ec.europa.eu/cosing/