At a glance
- CAS number
- 61789-32-0
- INCI name
- Sodium Cocoyl Isethionate
- Function
- surfactant, cleansing, foaming agent, conditioning
- Typical use level
- 10%–50%
- Solubility
- water
- Stable pH
- 4.5–7
CAS number and synonyms are sourced from PubChem. Function, usage levels, pH and compatibility are AI-assisted formulation guidance — verify against your supplier's technical data sheet and applicable regulations before use.
Also known as
SCI Baby Foam Coconut Fatty Acid Ester of Sodium Isethionate Cocoyl Isethionate
Compatibility
Works well with:
Cocamidopropyl Betaine Sodium Lauryl Sulfoacetate Glycerin Stearic Acid Cetyl Alcohol Sodium Lauroyl Glutamate
Use caution with:
High concentrations of cationic surfactants Strong acids Strong alkalis
SCI is mildly anionic and generally tolerates other anionics and amphoterics well; it pairs especially well with Cocamidopropyl Betaine to boost foam volume and mildness. Avoid highly alkaline conditions (pH above ~8) as hydrolysis of the ester bond can occur over time, reducing efficacy and shelf life. Cationic surfactants at high levels can form insoluble complexes and should be used with caution.
Formulation notes
Sodium Cocoyl Isethionate is a mild, skin-friendly anionic surfactant derived from coconut fatty acids and isethionic acid, prized for its exceptionally soft, creamy lather and low irritation profile relative to sulfate-based surfactants. It is a workhorse in solid syndet bars, cleansing bars, and powder cleansers, where it functions as the primary cleansing and lather agent while imparting a smooth, non-stripping skin feel. The ingredient is commonly supplied as a white waxy solid or flake and typically requires heat (above ~70 °C) or appropriate processing aids to incorporate into formulas.
Related ingredients
- Lauryl GlucosideSurfactant
- Sodium Lauryl SulfateSurfactant
- Sodium Cocoyl GlutamateSurfactant
- Sodium Laureth SulfateSurfactant
- Behenyl PEG/PPG-20/20 DimethiconeEmulsifier
- Cetearyl GlucosideEmulsifier