Shin-Etsu KF-9901 (Hydrogen Dimethicone) is a reactive silicone oil specifically designed for cosmetic powder surface treatment. With Si-H functional groups, it reacts with hydroxyl groups on powder surfaces to form a strong hydrophobic coating. It delivers excellent water/sweat resistance, anti-agglomeration, anti-caking properties and a smooth, silky skin feel. Compared with KF-99, it features milder reactivity and better skin feel, ideal for high-end cosmetic formulations.

• Appearance: Colorless transparent low-viscosity liquid, odorless

• Viscosity (25℃): 20 mm²/s

• Specific Gravity (25℃): 0.97

• Refractive Index: 1.399

• Functional Group Equivalent (Si-H content): 140 g/mol

• Volatility: ≤5% (105℃/3h)

• Package: 16 kg/drum

• Reactive Si-H bonds: chemically bond with hydroxyl groups on powder surfaces for strong hydrophobic encapsulation

• High hydrophobicity: significantly improves powder water/sweat resistance and anti-agglomeration

• Enhanced finished product performance: boosts waterproof, sweat-proof and anti-caking properties of powder cosmetics

• Silky skin feel: treated powders become soft, smooth and highly dispersible

• Low surface activity: reduces oil absorption and prevents powder caking

• No hydrogen release: mild reaction process, safe and stable to use

• Milder reactivity than KF-99: delivers superior skin feel for premium formulations

• Foundation powder, pressed powder and loose powder

• Eyeshadow, blush and highlighter

• Sunscreen powder and mineral makeup

• Long-wear and waterproof cosmetic formulations

• Hydrophobic modification of inorganic/organic cosmetic pigments and fillers