Sodium Lauroyl Isethionate is a mild anionic surfactant widely used in personal care formulations. It is the sodium salt of the lauric acid ester of isethionic acid, derived from natural lauric acid found in coconut and palm oils .
- CAS Number: 7381-01-3
- INCI Name: Sodium Lauroyl Isethionate
- Synonyms: Sodium 2-sulphonatoethyl laurate, Sodium 2-(dodecanoyloxy)ethanesulfonate, Dodecanoic acid, 2-sulfoethyl ester, sodium salt
- Molecular Formula: C₁₄H₂₇NaO₅S
- Molecular Weight: 330.416 g/mol
- EINECS Number: 230-949-8
- Extremely gentle on skin and hair, making it ideal for sensitive skin formulations
- Reduces irritation and dryness compared to traditional surfactants like sodium lauryl sulfate (SDS)
- Produces rich, dense, and creamy lather even in hard water
- Foam stability remains consistent across temperature ranges
- Leaves skin feeling soft and moisturized after cleansing
- Imparts smoothness and manageability to hair
- Acts as an antistatic agent, reducing flyaways
Sodium Lauroyl Isethionate is primarily used in:
- Syndet bars (synthetic soaps)
- Liquid soaps and shower gels
- Shampoos (especially sulfate-free formulations)
- Facial cleansers for sensitive skin
- Baby care products
- Personal hygiene products
- Syndet bars: 10-20%
- Liquid soaps/shower gels: 5-15%
- Shampoos: 8-15%
- Facial cleansers: 3-10%
- Skin Irritation: Low potential
- Eye Irritation: Mild to moderate (use with caution in eye-area products)
- Toxicity: Low oral and dermal toxicity
- Environmental Impact: Biodegradable and eco-friendly
Sodium Lauroyl Isethionate is a versatile surfactant valued for its mildness, excellent foaming, and conditioning properties. Its ability to maintain performance in hard water and compatibility with sensitive skin makes it a preferred ingredient in premium personal care formulations. Incorporate it into your products for gentle cleansing with luxurious foam and enhanced skin/hair feel.
