Science
Mechanism of Action
This ingredient functions by physically filling microscopic gaps between skin cells, thereby creating a noticeably smoother and softer surface texture while reducing dryness and flakiness. It establishes a protective occlusive film on the skin, which significantly prevents trans-epidermal water loss (TEWL) and ensures prolonged hydration and moisture retention. Additionally, it supplies hydrating lipids that aid in reinforcing and repairing the skin's natural moisture barrier.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Hydrogenated Soybean Oil is insoluble in water and exhibits neutral pH. The hydrogenation process significantly enhances its stability at room temperature and increases its resistance to oxidation, thus contributing to an extended shelf life for cosmetic formulations. It is less susceptible to rancidity and improves the physical stability of emulsions and lipid-based phases.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel concluded Hydrogenated Soybean Oil is safe for use in cosmetics, supported by its long history of safe food use and topical application, showing no evidence of dermal irritation or sensitization. However, due to its soy origin, individuals with known soy allergies or extremely sensitive skin are advised to perform patch testing. Its occlusive nature could potentially contribute to pore congestion in those with acne-prone skin. The U.S. FDA recognizes it as Generally Recognized As Safe (GRAS) for direct food addition.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Hydrogenated Soybean Oil is a valuable emollient and skin conditioner, effectively enhancing skin hydration and barrier function, particularly beneficial for dry and normal skin types.
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