Science
Mechanism of Action
This ingredient works through several mechanisms: it functions as an emulsifying agent to facilitate the stable mixing of oil and water in formulations like creams and lotions, ensuring uniform product texture. As a mild anionic surfactant, it reduces surface tension, aiding in the efficient removal of oil and dirt from the skin during cleansing. Furthermore, its re-fatting properties contribute to enhanced skin hydration, preventing moisture loss and leaving the skin feeling soft and smooth. It also serves as a mild thickening agent and a foam booster, improving lather quality and stability in cleansing products. Some data suggests it may also contribute antimicrobial activity, bolstering product preservation.
Research
Clinical Evidence
Medium confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Sodium Lauroyl Lactylate demonstrates robust stability across a wide pH range (4-9) and is thermally stable, making it suitable for cold processing conditions. Prolonged exposure to temperatures exceeding 80°C should be avoided. It is effective in stabilizing oil-in-water emulsions and enhancing product texture, contributing to a creamy feel and increased viscosity.
Synergies
- Anionic surfactants
- Nonionic surfactants
- Sodium Stearoyl Lactylate (for enhanced stability and elegance)
- Additional thickeners and co-emulsifiers
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has ruled Sodium Lauroyl Lactylate safe for use in cosmetic applications, a finding supported by EU Cosmetic Regulation and compatibility with US FDA guidelines. It is generally well-tolerated and exhibits a low potential for irritation at typical usage concentrations, which range from 0.5% to 5%. While classified as a weak skin sensitizer in guinea pig maximization tests at 0.5% and in LLNAs at concentrations up to 50%, these instances refer to higher, non-typical exposure levels. It is considered non-toxic and non-sensitizing at concentrations commonly found in personal care products, with a general recommended use level up to 20%.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Sodium Lauroyl Lactylate is a valuable, multi-functional ingredient enhancing product texture and stability while providing mild cleansing and moisturizing benefits, making it suitable for all skin types at typical usage concentrations.
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