Snapshot
- Overview
- A soap-like cleanser used to build lather in bars and shave products.
- Category
- Cleansing
- Type
- Surfactant
Sodium Isostearate
Sodium Isostearate is the sodium salt of isostearic acid, a soap-type anionic surfactant for alkaline systems. It's used in cleansing bars and shave products to build foam, aid wetting, and add structure.
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Our take
Is Sodium Isostearate a Good Ingredient?
It rates Fair because, as a soap-type anionic surfactant, it requires alkaline pH, which can be drying and potentially irritating, especially for sensitive or dry skin. It's useful for quick, strong cleansing but carries a higher risk of barrier disruption than milder syndet options.
What it does
Skin Benefits
It offers strong cleansing and quick wetting, useful for removing oils and residue, and suits short-contact cleansing where a brisk, thorough wash is preferred.
Where you'll find it
Uses in Skincare & Cosmetics
It's used in traditional soap bars and shaving creams to build lather and structure, and appears in solid cleansers and high-alkaline wash bases.
Before you use it
Safety
It may cause dryness or irritation due to its high-pH, soap-based nature; it's best suited to short contact and well-rinsed products. No common regulatory restrictions are noted for cosmetic use.
Products with Sodium Isostearate
