Science
Mechanism of Action
Sorbitan Sesquioleate functions by stabilizing water-in-oil emulsions, preventing the separation of immiscible oil and water components. On the skin, it acts as a conditioning agent, improving texture and spreadability. Its emollient properties enable it to form a thin, protective film, thereby aiding moisture retention and minimizing transepidermal water loss. It also serves as a wetting and dispersing agent for pigments.
Research
Clinical Evidence
Low confidenceN/A
Key findings
- 01 The provided research data primarily addresses the safety profile of Sorbitan Sesquioleate, indicating it is not an irritant or sensitizer at concentrations up to 30% in general clinical testing. Specific clinical studies quantifying its efficacy for skin benefits such as hydration or barrier improvement are not present in the available research.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
This oil-loving ingredient is insoluble in cold and hot water but readily dissolves in mineral oil and ethyl acetate. It effectively stabilizes water-in-oil emulsions and can be utilized alongside water-loving emulsifiers to achieve stable oil-in-water formulations.
Synergies
- Water-loving (hydrophilic) emulsifiers, to create stable oil-in-water emulsions.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel concluded in 2014 that Sorbitan Sesquioleate is safe for cosmetic use. While generally well-tolerated and exhibiting low irritancy, studies indicate a sensitization potential in certain populations, with positive patch test reactions ranging from 0.2% to 9.8%, particularly in individuals with atopic dermatitis. It's also noted that its use as an emulsifier in patch test preparations can potentially lead to false-positive reactions for other components if not tested independently.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Sorbitan Sesquioleate is a valuable emulsifier and skin-conditioning agent that enhances formulation stability and texture while providing emollient benefits, though individuals with sensitive skin should be aware of a moderate sensitization risk.
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