Science
Mechanism of Action
This ingredient functions primarily as a sophisticated skin conditioning agent, actively contributing to moisture retention and fortifying the skin's protective barrier. It forms soft, pliable, and water-resistant films that adhere exceptionally well to keratin found in skin and hair, ensuring shape retention, a uniform finish, and enhanced protection. Beyond its film-forming capabilities, Dextrin Isostearate acts as an emulsifier and stabilizer, promoting homogeneous product textures by binding oil and water. It also improves pigment dispersion and can impart thickening and adhesive properties at higher concentrations, while delivering a smooth, glassy finish at lower levels.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 Induces a perceptible tightening sensation in anti-aging creams and aids moisture retention in hydrating gels.
- 02 Significantly enhances color adhesion, quick-drying properties, and overall wear duration in lip liquids, eyeliners, and foundations by forming a resilient, waterproof film.
- 03 Contributes to rapid film drying, strong adhesion to eyelashes, improved film flexibility, and robust waterproof performance in mascaras.
Transparency
Dusting Analysis
No data available regarding 'dusting' properties for Dextrin Isostearate.
The Formula
Formulation
Stability
Dextrin Isostearate is an oil-soluble resin, engineered from modified hydrophilic dextrin and isostearic acid. It demonstrates stability under normal handling and storage conditions. It exhibits solubility in ester oils, hydrocarbons, and vegetable oils, but is notably insoluble in silicones, alcohols, and water. This ingredient does not contribute to viscosity increases or gelation in oil-based systems, making it suitable for applications requiring transparent stick formulations.
Conflicts
- Strong oxidizing agents
- Silicones
- Alcohols
- Water (due to insolubility)
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) panel included Dextrin Isostearate in a safety assessment of polysaccharide gums, reviewing manufacturing methods, specifications, and MSDS data. However, a conclusive 'safe as used' determination specifically for Dextrin Isostearate has not been explicitly stated. It is not classified for acute toxicity, skin corrosion/irritation, serious eye damage/eye irritation, or skin sensitization, and SkinSAFE identifies it as 'Irritant Free'. Under U.S. law, cosmetic ingredients generally do not require pre-market FDA approval, with manufacturers responsible for ensuring safety. No specific FDA prohibitions or restrictions, nor SCCS status, were identified for this ingredient.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Dextrin Isostearate is a valuable multi-functional ingredient, offering significant benefits in skin conditioning, film-forming for enhanced longevity, and texture improvement with a low irritancy profile, pending further comprehensive safety review by CIR.
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