Science
Mechanism of Action
This ingredient functions primarily as an emulsifying agent by reducing interfacial tension between immiscible liquids, such as oil and water. This allows for the creation and maintenance of stable, homogeneous emulsions. As a nonionic surfactant, it also influences product consistency and may impart mild humectant benefits, supporting skin hydration.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Exhibits good stability under typical formulation conditions. A related ingredient blend, Glyceryl Stearate and PEG-100 Stearate, has demonstrated stability across a pH range of approximately 4–9.
Conflicts
- concentrated nitric acid
- sulphuric acid
- strong oxidising agents
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has deemed PEG-15 Stearate, along with other PEG Stearates, safe for use in cosmetics at current concentrations. Studies on related PEG Stearates (e.g., PEG-2, -8, -40, -50, and -100 Stearates) confirm they are neither irritants nor sensitizers at concentrations up to 25%. It also holds FDA designation as safe for general or limited use in food.
Your Skin
Skin Compatibility
Our Assessment
Verdict
A highly versatile and well-tolerated emulsifier crucial for creating stable and aesthetically pleasing skincare formulations across all skin types.
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