Science
Mechanism of Action
As an emollient and skin conditioning agent, Maleated Soybean Oil functions by creating a hydrophobic film on the skin's outermost layer. This barrier effectively reduces transepidermal water loss (TEWL), thereby locking in moisture and contributing to improved skin hydration, softness, and a smoother texture, especially beneficial for dry or rough complexions.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
Data on dusting analysis for Maleated Soybean Oil is not available in the provided research.
The Formula
Formulation
Stability
This ingredient is oil-soluble. While specific optimal pH ranges for cosmetic stability are not readily available, non-cosmetic applications involving maleated soybean oil derivatives suggest they can be rendered water-dispersible and stable when neutralized with alkanolamines, typically achieving a pH between 8 and 10.
Safety
Safety Profile
Although Glycine Soja (Soybean) Oil, its parent compound, has been deemed safe by the CIR Expert Panel, Maleated Soybean Oil itself has not undergone a specific CIR review. It is a modified form reported to cause mild irritation, particularly in sensitive skin, and allergic contact reactions, often follicular. The precise sensitizing component remains unidentified, and purification efforts have not successfully reduced its allergological risk. Despite these concerns, EWG Skin Deep® classifies it with low concerns for various toxicities. Patch testing is strongly recommended prior to widespread use.
Your Skin
Skin Compatibility
Our Assessment
Verdict
While Maleated Soybean Oil offers emollient and skin conditioning benefits for dry and normal skin, its unreviewed CIR status, documented potential for moderate irritation and allergic reactions, and moderate comedogenicity risk render it a questionable ingredient for precision skincare formulations, especially for sensitive or acne-prone individuals.
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