Cyclomethicone D5 (Decamethylcyclopentasiloxane)
CAS Number: 541-02-6
Cyclomethicone D5 is a cyclic volatile silicone that evaporates quickly after application, leaving no residue on skin or hair. It acts as an excellent carrier for active ingredients and provides a lightweight, silky skin feel. Widely used in deodorants, hair care, and color cosmetics for its fast-dry and skin-feel-enhancing properties.
Technical Specifications
| appearance | Clear colorless liquid |
| purity (%) | ≥99 |
| flash point (°C) | 77 |
| boiling point (°C) | 210–215 |
Applications
- Antiperspirants and deodorants
- Hair serums and leave-in conditioners
- Color cosmetics (foundations, eyeshadows)
- Skin care primers and serums
- Sunscreen and after-sun products
Key Features
- Fast evaporation with no residue
- Lightweight and non-greasy texture
- Excellent carrier for actives and pigments
- Enhances skin feel and spreadability