Skip to content

Surfactant

POTASSIUM ISOSTEARATE

CAS 68413-46-7 Updated
78

Safety score · 0–100

Fine

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

About

A potassium soap of isostearic acid (a branched C18 fatty acid) — used as a mild cleansing surfactant. Branching gives a softer feel than straight-chain stearate soaps; well-tolerated at typical levels.

Function

SURFACTANT - CLEANSING

Skin benefits

  • Branched fatty-acid potassium soap
  • Mild cleansing surfactant
  • Good skin compatibility

Known concerns

  • Possible mild irritation at high %
  • Alkalinity may dry skin
  • No EU CosIng restrictions at typical levels

References

EU

EU CosIng database

European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.

Related surfactants

78
ALMONDAMIDOPROPYL BETAINE
Surfactant
 78
AMMONIUM DINONYL SULFOSUCCINATE
Surfactant
 78
ARGININE LAUROYL GLUTAMATE
Surfactant
 78
BABASSUAMIDOPROPYL BETAINE
Surfactant
 78
BUTYL GLUCOSIDE
Surfactant
 78
C11-13 PARETH-6
Surfactant
 78
C12-13 ALKETH-3 (FORMERLY C12-13 PARETH-3)
Surfactant
 78
C12-13 ALKETH-7 CARBOXYLIC ACID (FORMERLY C12-13 PARETH-7 CARBOXYLIC ACID)
Surfactant

Check your shelf

Find POTASSIUM ISOSTEARATE in your products.

Scan any cosmetic product with LuxSense to see if it contains POTASSIUM ISOSTEARATE and get a full ingredient breakdown with safety scores.

This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.