Science
Mechanism of Action
This ingredient utilizes a chemical modification that transforms standard starch into a water-repellent particle. It selectively binds to sebum and epidermal lipids through high-capacity absorption, effectively neutralizing greasiness on the skin surface. Simultaneously, it serves as a rheology modifier, enhancing the structural integrity and viscosity of emulsions for a more luxurious application experience.
Research
Clinical Evidence
High confidence5%
Key findings
- 01 A 21-day cumulative irritation study on 23 subjects using a 50% concentration classified the material as a probable mild irritant, suggesting high biocompatibility at standard formulation levels.
- 02 Structural analog testing (OECD 401) demonstrated an LD50 exceeding 5,000 mg/kg, confirming an excellent systemic safety profile and low oral toxicity.
Transparency
Dusting Analysis
Typically utilized at functional levels between 1% and 33% for mattification; concentrations below 1% in oil-control products may indicate 'label claim' inclusion without significant performance benefits.
The Formula
Formulation
Stability
Maintains structural integrity under standard conditions but is susceptible to hydrolysis and degradation if exposed to temperatures above 50°C or highly acidic environments.
Synergies
- Sunscreen filters
- Silicone elastomers
- Mineral pigments
Conflicts
- Strong oxidizing agents
- pH environments below 3.0
- Highly alkaline conditions (causes starch swelling)
Safety
Safety Profile
The CIR Expert Panel emphasized that for spray-based applications, particle size must be maintained above 10 microns to prevent potential inhalation issues.
Your Skin
Skin Compatibility
Our Assessment
Verdict
An exceptional oil-management ingredient that provides a sophisticated matte finish and improved formula stability for oily and combination skin types.
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References
Sources