Cyclopentasiloxane (D5) – Lightweight Silicone for Smooth, Silky Formulations
What It Is:
Cyclopentasiloxane, also known as D5, is a volatile, low-viscosity silicone widely used in personal care and cosmetic formulations. It provides a silky, smooth feel, spreads evenly, and evaporates quickly without leaving residue. Its lightweight nature makes it ideal for high-performance skincare, haircare, and cosmetic products.
Chemical Profile:
Chemical Name: Decamethylcyclopentasiloxane
CAS No.: 541-02-6
Molecular Formula: C₁₀H₃₀O₅Si₅
Appearance: Clear, colorless liquid
Applications – Where It Excels:
Cosmetics & Skincare: Serums, lotions, creams – improves spreadability and skin feel
Haircare: Shampoos, conditioners, hair serums – adds shine, reduces frizz, enhances smoothness
Makeup & Personal Care: Primers, foundations, deodorants – leaves a silky, non-greasy finish
Industrial & Technical Use: Silicone-based lubricants and coatings
Specifications (Typical):
Purity: ≥99%
Appearance: Clear, colorless liquid
Viscosity: ~4.0 cSt at 25°C
Density: 0.805 g/cm³
Volatility: Evaporates rapidly at room temperature
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