Primosil™ 645 (Dimethicone & Dimethicone / Vinyl Dimethicone Cross Polymer)

Primosil™ 645 (Dimethicone & Dimethicone / Vinyl Dimethicone Cross Polymer) is a specialized silicone blend that enhances personal care and cosmetic formulations. Renowned for providing a smooth, silky texture, it significantly improves the tactile experience of skincare and makeup. It forms a soft, elastic film on the skin, smoothing fine lines and imperfections, making it ideal for primers and foundations. Additionally, it imparts a long-lasting, velvety feel, preventing cosmetics from smudging or settling into pores. In skincare, it locks in moisture without feeling heavy, supporting hydration. Its pigment dispersion and thickening abilities ensure stable, uniform performance in color cosmetics.

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Technical Specifications
PrimosilTM 645 (Dimethicone & Dimethicone / Vinyl Dimethicone Cross Polymer)
INCI
Dimethicone & Dimethicone / Vinyl Dimethicone Cross Polymer
CAS Number
Dimethicone: 63148-62-9
Dimethicone / Vinyl Dimethicone Crosspolymer: 541-02-6
Purity
95%
Molecular Formula
Dimethicone: (C2H6OSi)n
Dimethicone / Vinyl Dimethicone Crosspolymer: (C2H6OSi)x(C4H6O2)x(C2H6O)x
Solubility
Insoluble in water.
pH
7.0
Shelf Life
24-months from the date of manufacturing.
Melting Point
200-250°C
Storage
Store in a cool, dry place in tightly sealed containers. Protect them from moisture and keep them away from extreme temperatures and direct sunlight to maintain the integrity of the products. Ensure adequate ventilation in storage areas to prevent vapor accumulation.
Key Benefits
PrimosilTM 645 (Dimethicone & Dimethicone / Vinyl Dimethicone Cross Polymer)
Enhances Product Texture
Improves the texture of cosmetic products, making them silkier and more luxurious to the touch, enhancing user experience across skin and hair care.
Forms a Protective Barrier
Forms a protective barrier on the skin or hair, which helps to lock in moisture and protect against environmental damage.
Provides a Smooth Application
Facilitates smooth application, allowing for even coverage and a flawless finish in makeup and skincare products.
Conditions Hair
Helps condition the hair, making it softer and easier to manage while reducing frizz and tangles.
Enhances Longevity of Makeup
Increases the durability of makeup, helping it to stay in place longer and resist smudging or fading throughout the day.
Provides a Matte Finish
Offers a matte finish, which is particularly desirable in face care products to control shine and oiliness.
Seals in Moisture
Helps to seal in moisture, keeping skin and hair hydrated longer, which is essential for maintaining healthy skin and hair.
Reduces the Appearance of Fine Lines
Temporarily fills in fine lines and wrinkles, making the skin appear smoother and more youthful, ideal for anti-aging products.
Enhances Sensory Feel
Provides a silky, non-greasy feel that enhances the sensory experience of cosmetics, making them more pleasant to use.
Smoothing Effect on Skin
Smooths skin texture, provides an ideal base for makeup application and improves the overall appearance of skin care products.

Frequently Asked Questions (FAQ)

What is Primosil™ 645 (Dimethicone & Dimethicone / Vinyl Dimethicone Cross Polymer), and how does it benefit hair care products?

Dimethicone is a silicone-based polymer that coats the hair, providing smoothness and shine while helping to detangle and condition it. It also acts as a protective barrier against heat and environmental damage.