Science
Mechanism of Action
On the skin, Glyceryl Hydroxystearate acts as a fast-penetrating emollient, establishing a protective surface barrier to minimize trans-epidermal water loss. This mechanism effectively lubricates, conditions, softens, and smooths the skin, contributing to sustained hydration. Beyond its direct skin benefits, it serves as an auxiliary emulsifier, promoting the stable integration of immiscible liquids by modifying interfacial tension. This property significantly enhances emulsion stability, increases product viscosity (bodying), and improves the uniform dispersion of colorants and active ingredients within a formulation. Furthermore, it aids in balancing product pH and extends shelf-life by preventing undesirable physical changes such as freezing or crust formation.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Glyceryl Hydroxystearate is chemically stable and non-ionic, providing robust emulsion stability across a wide pH range. It enhances the bodying properties of formulations and contributes to extended shelf-life by preventing freezing or crust formation.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has deemed Glyceryl Hydroxystearate safe for use in cosmetics, noting its poor absorption through all routes of exposure and low concern for human health effects. While undiluted forms may cause minor skin irritation, particularly on abraded skin, it is generally non-irritating at typical cosmetic concentrations. It is neither a sensitizer nor a photosensitizer. Additionally, it holds FDA approval for use in food contact substances under 21 CFR 175.105.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Glyceryl Hydroxystearate is a valuable ingredient, offering significant emollient benefits for all skin types alongside crucial formulation stabilization and textural enhancement, with a strong safety profile.
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References
Sources