Technical Profile & Formulation Guide for SDI Yellow IO AS
Advanced Hydrophobicity with Triethoxycaprylylsilane
SDI Yellow IO AS is surface-treated with Triethoxycaprylylsilane, an advanced coating that transforms the pigment from hydrophilic (water-loving) to hydrophobic (water-repelling). This chemical modification creates a stable barrier against water and sweat, which is critical for developing long-wear color cosmetics. The coating ensures the pigment particles do not absorb water, preventing color shifting, caking, or streaking in high-performance makeup.
Formulation Benefits of Surface-Treated Iron Oxides
The silane coating provides significant advantages beyond simple water resistance. It greatly improves the pigment’s dispersibility in oils, esters, and silicones, leading to faster processing times and a more homogenous, stable formula. This treatment also enhances skin adhesion for improved wear and reduces the dry, chalky feel sometimes associated with uncoated iron oxides, resulting in a creamier, more luxurious texture.
Key Formulation Benefits
- Enhanced Long-Wear Performance: Hydrophobic coating resists sweat, humidity, and water, making it ideal for creating transfer-resistant and long-lasting makeup.
- Superior Dispersibility: Easily disperses in the oil phase of emulsions or in anhydrous systems, preventing agglomeration and ensuring color uniformity.
- Improved Skin Feel & Adhesion: The silane treatment provides a creamy texture, better slip, and significantly improved adhesion for a comfortable, second-skin finish.
- High Color Purity & Stability: Delivers intense, stable matte yellow color that is versatile enough for all cosmetic applications, including face, eye, lip, and nail products.