What is Dimethicone 1000 CST, and how is it used in cosmetic formulations?
It is a type of polydimethylsiloxane with a medium to high viscosity, offering smooth texture and excellent emollient properties. It is commonly used in skincare, haircare, and color cosmetics to provide a non-greasy, protective barrier on the skin or hair.
What are the primary benefits of using Primosil™ D1000 (Dimethicone 1000 CST) in personal care products?
It imparts a silky, smooth feel, enhances spreadability, provides water repellency, and helps to lock in moisture. Its high viscosity makes it ideal for products requiring long-lasting, durable effects, such as creams, lotions, and hair serums.
How does the viscosity of Primosil™ D1000 (Dimethicone 1000 CST) affect its performance in formulations?
Its viscosity indicates a relatively thicker silicone oil, contributing to a more substantial skin feel and forming a longer-lasting, protective barrier compared to lower viscosity dimethicones. This makes it suitable for products that require enhanced moisturization and conditioning effects.
Is Primosil™ D1000 (Dimethicone 1000 CST) suitable for sensitive skin formulations?
Yes, it is considered non-comedogenic, hypoallergenic, and gentle on the skin. It can form a barrier that protects sensitive skin from environmental stressors without causing irritation.
Can Primosil™ D1000 (Dimethicone 1000 CST) be used in both oil-in-water (O/W) and water-in-oil (W/O) emulsions?
Yes, it is versatile and can be incorporated into both O/W and W/O emulsions. However, its solubility characteristics must be taken into account to ensure optimal stability and texture in the final product.
How does Primosil™ D1000 (Dimethicone 1000 CST) interact with other ingredients in a formulation?
It is chemically stable and generally compatible with a wide range of cosmetic ingredients. However, formulators should be cautious when combining it with ingredients that may affect the emulsion's stability, such as certain surfactants or electrolytes.
How does Primosil™ D1000 (Dimethicone 1000 CST) enhance the sensory properties of a formulation?
It provides a velvety, non-tacky texture that improves the overall sensory profile of formulations. Its high viscosity creates a smooth, cushioning effect on the skin, enhancing the perception of luxury in products.
Is Primosil™ D1000 (Dimethicone 1000 CST) considered safe for use in personal care products?
Yes, it is recognized as safe for use in cosmetics and personal care products by regulatory authorities such as the FDA and the European Commission. It is non-toxic, non-irritating, and does not penetrate the skin barrier.
How does Primosil™ D1000 (Dimethicone 1000 CST) affect the spreadability of a formulation?
It enhances the spreadability of formulations by reducing friction during application. Its smooth glide and high viscosity create a uniform film on the skin or hair, promoting an even and comfortable application experience.
Can Primosil™ D1000 (Dimethicone 1000 CST) be used in combination with other silicones?
Yes, it can be blended with other silicone oils, such as lower-viscosity dimethicones or cyclomethicones, to customize the texture, spreadability, and overall performance of a formulation.