Science
Mechanism of Action
On the skin, Dextrin acts as a potent humectant, drawing and retaining moisture to promote hydration and softness. It exhibits pronounced skin-soothing properties by actively reducing inflammatory markers such as IL-1α. Specific forms, like hyperbranched dextrin, contribute to strengthening the skin's protective barrier, thereby minimizing transepidermal water loss (TEWL) and shielding against environmental aggressors. It is also recognized as microbiome-friendly, helping to maintain a balanced skin flora and alleviate sensitivity. Within formulations, Dextrin serves as a product stabilizer by improving the solubility of challenging ingredients, ensuring a smooth and uniform product texture. Its emulsifying capabilities aid in the homogeneous blending of oil and water components, in addition to acting as a thickener, foam booster, adhesion promoter, and filler.
Research
Clinical Evidence
High confidence5%
Key findings
- 01 In vitro and in vivo studies utilizing hyperbranched dextrin demonstrated a significant reduction in the inflammatory marker IL-1α, indicating strong soothing capabilities following chemical aggression.
- 02 Further in vitro and in vivo studies with hyperbranched dextrin showed a significant reduction in IL-1α and an efficient soothing effect. This concentration also protected the skin against transepidermal water loss (TEWL) and effectively maintained the skin's barrier function to retain hydration after both chemical and mechanical aggression.
Transparency
Dusting Analysis
No specific data regarding 'dusting' or potential for ingredient over-formulation for Dextrin was identified in the provided research, suggesting it is not a commonly dusted ingredient.
The Formula
Formulation
Stability
Dextrin demonstrates increased water solubility compared to unmodified starch, being soluble in hot water (0.1 g/ml). While its precise stability pH range is not generally specified, related modified forms like Dextrin palmitate report stability between pH 4.5-6.5. This range aligns well with the typical pH of 4.5-5.5 favored for optimal performance and stability in many skincare formulations.
Safety
Safety Profile
Dextrin is widely recognized for its strong safety profile in cosmetics, having been deemed 'safe as used' by the Cosmetic Ingredient Review (CIR) in a 'Final Report' from 2015. It is also accepted by the EU Cosmetics Regulation and designated safe for general food use by the FDA. EWG lists Dextrin with 'low' concerns across various toxicity categories. While generally well-tolerated, rare individual allergic reactions or skin sensitivity may occur, particularly in individuals with sensitive skin, as with any cosmetic ingredient. Maximum concentration for Dextrin itself is not specified, though for modified forms like Dextrin palmitate, concentrations up to 10% are common.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Dextrin is a valuable ingredient due to its proven efficacy in soothing and hydrating the skin and strengthening the skin barrier, alongside its crucial role in improving product stability and texture across a wide range of formulations.
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