Dimethicone 350
Medium-viscosity silicone fluid that adds long-lasting slip, softness, and shine. Great for hair serums, anti-frizz blends, barrier creams, and silky skin-feel upgrades.
Dimethicone 350 is a silicone fluid used to improve glide, reduce tack, and boost a smooth, premium finish in both skin and hair products.
Unlike volatile silicones, it stays on the skin and hair to provide longer-lasting softness and a protective feel.
It is widely used in anti-frizz hair serums, heat-protection blends, leave-in products, barrier creams, and silky-feel moisturisers.
It also helps reduce “drag” in heavier formulas and improves spread without adding greasiness.
FEATURES
- Long-lasting slip – improves glide and reduces drag.
- Soft, silky finish – reduces tack and improves sensory.
- Hair shine support – boosts gloss and helps reduce frizz feel.
- Barrier feel – adds a protective, smoothing layer in creams and balms.
BEST FOR
- Hair serums
- Anti-frizz oils
- Heat-protection blends
- Barrier creams
- Silky moisturisers
- Primers
FORMULATION GUIDELINES
| INCI | Dimethicone |
|---|---|
| Type | Non-volatile silicone fluid (medium viscosity) |
| Solubility | Oil soluble / silicone phase |
| SAP Value | N/A (silicone fluid, not a triglyceride oil) |
| Iodine Value | N/A (silicone fluid, no unsaturation value) |
| Viscosity Grade | 350 cSt (typical) |
| Use Rate | 0.5–20% typical. 1–5% common in lotions and creams, 5–20% common in hair serums and anhydrous blends. |
| Best Phase | Oil/silicone phase (anhydrous) or oil phase of emulsions designed to accept silicones |
| pH Compatibility | Not pH dependent. pH N/A for anhydrous systems. |
| Temperature Tolerance | Stable under normal processing. We recommend adding below 70°C and avoiding unnecessary long heat holding. |
| Pro Tip | For hair serums, combine dimethicone 350 with a volatile silicone (like cyclopentasiloxane) for better spread and a lighter feel. In emulsions, use it to reduce tack and improve slip, especially in barrier creams and silky moisturisers. Check packaging compatibility, because silicones can interact with some plastics over long storage. |
| Appearance | Clear, colourless liquid |
| Stability Notes | Very stable. Most issues come from poor emulsification or packaging compatibility rather than oxidation. |
| Storage | Keep sealed, cool and dry, away from direct sunlight. |
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