Science
Mechanism of Action
This ingredient functions principally by stabilizing the pH of a formulation, acting as a buffer to maintain it within a skin-compatible range. While it is derived from Glycolic Acid, its exfoliating action is generally considered mild compared to the free acid form. It is noted to facilitate gentle skin turnover and enhance the skin's capacity to retain water in the stratum corneum, thereby promoting hydration and a smoother complexion.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Sodium Glycolate is stable under typical conditions but is sensitive to moisture and prolonged air exposure. It is hygroscopic and functions effectively as a buffering agent to stabilize the overall pH of cosmetic formulations. It can release glycolic acid upon reaction with strong acids.
Conflicts
- strong acids (releases glycolic acid)
- strong oxidizing agents
- moisture (hygroscopic)
- prolonged exposure to air
Safety
Safety Profile
The CIR Expert Panel concluded that Glycolic Acid salts, including Sodium Glycolate, are safe for use in cosmetic products at concentrations up to 10% in formulations with a final pH of 3.5 or higher. For salon-specific products, it is deemed safe at concentrations up to 30% with a final pH of 3.0 or higher, provided it's for brief, discontinuous use by professionals, followed by thorough rinsing, and accompanied by daily sun protection instructions. A specific FDA GRAS status or SCCS opinion for Sodium Glycolate was not identified in the research data.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Sodium Glycolate is a valuable ingredient for its essential role in stabilizing cosmetic formulations at an optimal pH, while also offering subtle hydrating and mild exfoliating benefits suitable for a wide range of skin types.
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