Silicone oil is one of the common ingredients in cosmetics and has a variety of benefits and uses. The role of silicone oil in cosmetics includes its advantages in moisturizing, increasing product texture, providing smoothness, and improving cosmetic stability.

Silicone oil is a broad term that includes many different types of silicone compounds. Common types of silicone oils include dimethicone (polydimethylsiloxane) and cyclosiloxane (cyclopentasiloxane). They are slightly different in chemical structure and properties, but have similar applications in cosmetics. These two silicone oils are the most commonly used silicone oils with the largest market share.

1. Dimethicone (polydimethylsiloxane) is also known as PDMS. Wide range of viscosities
Chemical properties: Polydimethylsiloxane is a polymer composed of repeating dimethylsiloxane units. It is a colorless, odorless, non-toxic liquid with low surface tension and high stability. Due to its special chemical structure, it has good heat resistance, cold resistance and chemical stability.

Application areas: Polydimethylsiloxane is widely used in cosmetics, personal care products and medical fields. In cosmetics, it is often used as an emollient, moisturizer, softener and surfactant. It can improve the texture of the product, providing a smooth and silky touch. In addition, polydimethylsiloxane is also commonly used in medical dressings, lubricants and medical devices.

2. Cyclosiloxane (cyclopentasiloxane)
Chemical properties: Cyclopentasiloxane is a compound composed of five dimethylsiloxane rings. It is a colorless, odorless, low-viscosity liquid. Similar to polydimethylsiloxane, it has good heat resistance, cold resistance and chemical stability.

Application areas: Cyclopentasiloxane is mainly used in personal care products and cosmetics. It is often used as a solvent, thickener and emollient. Due to its low viscosity and rapid volatility, it can provide a light feeling and rapid absorption of the product, making it widely used in skin care products, hair care products and makeup.