Potassium Sterate
Potassium Sterate
POT
8/10
Concern level
High concern
Potassium stearate is the potassium salt of stearic acid, used mainly as a soap, emulsifier, surfactant, and texture modifier. It helps create cleansing structure, foam, and product body in alkaline or soap-based systems.
Pore-clogging
Low
Pregnancy
Safe
Regulatory
No data
Benefits
Controls Oil Production
Chemical Properties
Molecular Weight
322.6 g/mol pH Range
8.50 - 10.50Typical Concentration
0.50% - 10.00%CAS Number: 593-29-3
Skin Type Compatibility
dry skin3/10
oily skin8/10
sensitive skin4/10
acne prone7/10
mature skin4/10
normal skin7/10
Interactions
incompatible with: Avoid low-pH acid systems; acids will convert the soap salt back toward stearic acid and reduce cleansing/emulsifying performance.
Risks & Warnings
Can be irritating or drying at higher levels because it is a soap salt and usually works best in alkaline systems. May also feel stripping on barrier-impaired skin.
Vegan Cruelty-Free
