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Dimethicone – Lightweight Silicone for Smoothing & Shine

Dimethicone  is a blend of low-viscosity linear siloxanes, often used in cosmetics as a volatile carrier or lightweight emollient. Unlike heavier dimethicones, evaporates after application, leaving no greasy residue but imparting a smooth, silky feel to the skin or hair. This makes it ideal for serums, primers, sunscreens, hair serums, and sprays. It also enhances the application of makeup and reduces tackiness in emulsions, while providing excellent water resistance.

INCI Name: Dimethicone
CAS Number: 63148-62-9
Solubility: Oil-soluble; insoluble in water
Add Phase: Oil phase (or post-emulsion cool-down)
pH Stability: Stable across wide pH range (3–9)
Processing Temperature: Below 60°C preferred for volatility retention
Appearance: Clear, colorless liquid
Odor: Odorless
Molecular Formula: (C₂H₆OSi)n
Molecular Weight: Variable (Low molecular weight grade)
Flash Point: ~120–160°C (varies by viscosity)
Density: ~0.84–0.97 g/cm³
Chemical Type: Volatile Silicone
Functional Groups: Siloxane
Primary Cosmetic Uses: Primers, serums, conditioners, sunscreens, creams, sprays