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When preparing stable, great-feeling water-in-oil (W/O) or silicone-in-water (W/Si) systems, emulsifier choice is the heart of the formulation. IOTA 99366 Lauryl PEG-9 Polydimethylsiloxyethyl Dimethicone is a lipophilic, alkyl-modified polyether dimethicone designed for highly stable, silky, non-greasy personal care products — ideal for sunscreens, color cosmetics, and skin care.
This product is a lipophilic alkyl-modified polyether dimethicone. It offers excellent W/Si and W/O emulsifying capacity, good emulsification of both silicone oils and non‑silicone esters, outstanding emulsion stability, and excellent dispersing power for powder raw materials.
| Feature | Benefit |
|---|---|
| Excellent W/Si & W/O emulsifying capacity | Stably emulsifies high silicone oil phases and polar oil phases — broad compatibility |
| Easy emulsification, low‑temperature processing | No heating required; cold‑processable — simplifies manufacturing, saves energy |
| Outstanding powder dispersion | Evenly disperses physical sunscreens, pigments, etc. — prevents agglomeration |
| Silky, non‑greasy skin feel | Provides a light, soft, dry, non‑sticky application experience |
| Superior emulsion stability | Withstands temperature changes and long‑term storage — maintains system integrity |
| Parameter | Value |
|---|---|
| Appearance (visual) | Colorless to light yellow transparent to translucent liquid |
| Specific gravity (25°C) | 0.900 – 0.950 |
| Viscosity (cSt, 25°C) | 400 – 800 |
| Refractive index (25°C) | 1.4250 – 1.4350 |
Skin care: Moisturizers, repair creams, anti‑aging serums
Color cosmetics: Foundations, primers, makeup bases
Sun care: High‑protection outdoor sunscreens, daily sunscreens
Process‑friendly: Easy cold emulsification — suitable for cold‑process formulations
Broad compatibility: Stably emulsifies both high‑ and low‑polarity oil phases
Premium skin feel: Silky, light, non‑greasy, no pilling
High stability: Solves common W/O system issues — water separation and viscosity loss
