Science
Mechanism of Action
This ingredient is created by combining ten hydrophilic glycerin molecules with lipophilic isostearic acid, resulting in an amphiphilic structure. This dual nature allows it to effectively reduce interfacial tension, thereby stabilizing emulsions by preventing the separation of oil and water phases. Beyond its emulsifying properties, it actively conditions the skin, acting as an emollient to soften and smooth, and as a humectant to attract and retain moisture. In cleansing formulations, it also acts as a mild surfactant, aiding in the removal of impurities without compromising the skin's natural barrier.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Polyglyceryl-10 Pentaisostearate is valued for its ability to create stable and smooth emulsions. Similar polyglyceryl stearate compounds are readily dispersible in water, exhibiting strong hygroscopic properties and forming stable structures in water-containing formulas. It is typically incorporated into the oil phase of a formulation, with related compounds having a melting point around 55°C.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel concluded that Polyglyceryl Fatty Acid Esters, a group encompassing Polyglyceryl-10 Pentaisostearate, are safe for use in cosmetics at concentrations up to 5% under current practices, provided the formulations are non-irritating. Clinical studies indicate an absence of dermal sensitization at typical use concentrations, reinforcing its mild and non-irritating profile, making it suitable for sensitive skin. While generally considered safe, individuals with extremely sensitive skin or specific allergies should perform a patch test as a precautionary measure.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Polyglyceryl-10 Pentaisostearate is a valuable ingredient, serving as an effective emulsifier for stable formulations while simultaneously offering significant skin conditioning, emollient, and moisturizing benefits suitable for all skin types.
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