Science
Mechanism of Action
This ingredient operates by lubricating the skin surface, imparting a noticeably soft and smooth feel. Simultaneously, it functions as an emulsifier and surfactant, effectively lowering interfacial tension between liquids to facilitate the formation and stability of complex product formulations.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Related propoxylated ethers demonstrate remarkable stability across a wide range of pH values, suggesting PPG-30 Steareth-4 possesses similar robust pH stability. It is known to contribute to stable emulsion formation and may aid in preventing salt crystallization, potentially also acting as a solvent for lipophilic components like UV filters.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has concluded that PPG Stearyl Ethers, including PPG-30 Steareth-4, are safe for use in cosmetic products. It is considered safe within current applications and concentrations, up to a maximum of 25%, provided the final formulation is non-irritating. The FDA also permits its use as an indirect food additive in textile production.
Your Skin
Skin Compatibility
Our Assessment
Verdict
PPG-30 Steareth-4 is a valuable ingredient, effectively enhancing skin feel while ensuring robust formulation stability across a broad spectrum of cosmetic applications.
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