Primosil™ 34DT (Cyclopentasiloxane & Dimethicone Crosspolymer)

Primosil™ 34DT (Cyclopentasiloxane & Dimethicone Crosspolymer) is a popular personal care and cosmetics ingredient known for enhancing product texture and performance. This silicone-based compound provides a silky, smooth feel and evaporates quickly, leaving a soft, powdery finish without greasiness. It serves as an excellent base for primers and foundations, filling in fine lines and pores to create a flawless makeup canvas. Additionally, it forms a flexible, breathable film that extends cosmetic longevity. Its ability to disperse pigments evenly stabilizes color cosmetics for consistent coverage. Non-comedogenic, it’s suitable for all skin types, including sensitive and acne-prone skin.

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Technical Specifications
PrimosilTM 34DT (Cyclopentasiloxane & Dimethicone Crosspolymer)
INCI
Cyclopentasiloxane & Dimethicone Crosspolymer
CAS Number
541-02-6
Molecular Formula
C10H30O5Si5
Molecular Weight
370.77 g/mol
Solubility
Soluble in water.
Shelf Life
24-months from the date of manufacturing.
Boiling Point
210°C
Melting Point
-38°C
Storage
Store in a cool, dry place in tightly closed containers to protect from moisture and other contaminants.
Key Benefits
PrimosilTM 34DT (Cyclopentasiloxane & Dimethicone Crosspolymer)
Enhanced Skin Feel
Provides a velvety, smooth texture to formulations, enhancing the sensory experience on application.
Quick Drying
Cyclopentasiloxane evaporates rapidly, leaving behind a lightweight, non-greasy feel, ideal for skin and hair care products.
Improved Spreadability
Offers excellent spreading properties, ensuring uniform application of the product across the skin or hair surface.
Long-lasting Effect
Creates a persistent, breathable film on the skin that prolongs the effects of active ingredients in the formulation.
Versatility in Formulations
Compatible with a wide range of cosmetic ingredients, allowing formulators flexibility in creating various product types, including creams, serums, and gels.
Non-comedogenic
Suitable for use in products targeting sensitive or acne-prone skin, as it does not clog pores or cause breakouts.
Enhances Pigment Dispersion
Improves the dispersion of pigments and other solid particles in color cosmetics, resulting in better coverage and a smoother finish.
Lightweight and Non-Oily
Provides a lightweight, non-oily feel, making it ideal for products where a matte finish is desired.
Stabilizes Formulations
Helps to stabilize emulsions and prevent separation, ensuring product consistency over its shelf life.
Water Resistance
Contributes to the water resistance of formulations, enhancing the performance of products like sunscreens and long-wear cosmetics.

Frequently Asked Questions (FAQ)

What is Primosil™ 34DT (Cyclopentasiloxane & Dimethicone Crosspolymer) and how is it used in formulations?

It is a silicone-based compound used in personal care formulations to provide a smooth, silky texture. It is a common ingredient in skincare, hair care, and makeup products, acting as an emollient and skin-conditioning agent.