Science
Mechanism of Action
This ingredient operates by forming a lightweight, protective physical barrier on the skin's surface. This barrier effectively seals in essential hydration, significantly decreasing transepidermal water loss and thus enhancing the skin's moisture content. Its presence also improves the skin's tactile feel, imparting a desirable softness and slip.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Formulations containing this ingredient, or its key component PEG-8 Dimethicone, maintain optimal stability within a pH range of 5.5 to 8.5. Stability studies on PEG-8 Dimethicone at 1% active concentration indicate 20% hydrolysis occurred in 45 days at pH 5 and 86 days at pH 8. For best practice, incorporate into the oil phase without exceeding 50°C (125°F), or add to emulsions once the temperature has cooled to 50°C (125°F) or below.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has deemed dimethicone and related polymers, including this ingredient's class, safe for cosmetic use within current concentrations, provided they are formulated to be non-irritating. While specific toxicity data (oral/parenteral, dermal, inhalation) for Cocamidopropyltrimonium Dimethicone PEG-8 Succinate may be 'not determined' in some public databases, its high molecular weight renders skin absorption unlikely, contributing to its generally well-tolerated profile when correctly formulated.
Your Skin
Skin Compatibility
Our Assessment
Verdict
COCAMIDOPROPYLTRIMONIUM DIMETHICONE PEG-8 SUCCINATE is a valuable conditioning emollient that enhances skin hydration and texture through barrier formation, deemed safe for use in a wide range of cosmetic formulations.
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References
Sources