Sodium Stearoyl Lactylate
Ingredient Info
Sodium stearoyl lactylate is an emulsifier—a ingredient that helps bind water and oil together in skincare formulas, creating a smooth, stable texture. It's derived from natural sources (lactic acid and stearic acid) and is commonly used in both food and cosmetic products.
Benefits
- Stabilizes emulsions, preventing separation of water and oil phases
- Improves texture and spreadability of creams and lotions
- Helps create light, airy formulations in certain products
Potential concerns
- Rare allergic contact dermatitis reported in sensitive individuals
- May cause irritation in people with fragrance or emulsifier sensitivities
Science: A 2024 Cosmetic Ingredient Review panel assessed sodium stearoyl lactylate salts as safe in cosmetic use at typical concentrations. However, isolated cases of allergic contact dermatitis have been documented, primarily in individuals with known sensitivities to emulsifiers. The ingredient forms stable gel-like structures in formulations, which is well-characterised in scientific literature.
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