formulated by blending an ultra‑high‑viscosity dimethiconol MQ resin with a low‑viscosity propyl‑modified silsesquioxane, creating a balanced network polymer that forms coherent films on substrates​.

MQ-1640 Resin is formulated by blending an ultra‑high‑viscosity dimethiconol MQ resin with a low‑viscosity propyl‑modified silsesquioxane, creating a balanced network polymer that forms coherent films on substrates​. The MQ component (monofunctional “M” units and tetrafunctional “Q” units) provides film‑forming backbone strength, while the T‑propyl silsesquioxane introduces flexibility and adhesion​. As a result, the resin exhibits both high mechanical integrity and comfortable skin feel without cracking upon stretching​

Applications and Usage

Color Cosmetics

Used at 3–5 wt % (up to 15–20 wt % for high‑performance products) in foundations, mascaras, lipsticks, and blushes to impart long‑wear, smudge‑proof, and color‑intense films.

Skin Care & Sun Care

In skincare emulsions and sunscreens, it boosts SPF and enhances wash‑off resistance, enabling products to maintain UV protection even after exposure to water and sweat.

Hair Care

In styling formulations, it provides flexible hold, improved adhesion, and sebum resistance without a heavy or tacky feel, suitable for hair sprays and leave‑in treatments.

Formulation Guidelines

1. Phase Incorporation: Disperse flakes into the oil or silicone phase of the formulation; common solvents include volatile silicones (cyclomethicone), isododecane, and anhydrous alcohols to ensure rapid wet‑out and dissolution.

2. Temperature: Warm carrier oils to 60–70 °C to reduce dissolution time from ~2 h to 30 min, then cool under stirring for homogeneous dispersion.

3. Shear: Gentle mixing avoids formation of large aggregates; higher shear can be employed post‑dispersion for uniform flake size distribution.

4. Compatibility: Broadly compatible with chemical sunscreens and natural oils; compatibility testing is recommended for novel actives or novel carriers.

Performance Benefits

• Transfer Resistance: Exceptional resistance to smudging and transfer

• Wash‑off Resistance: Maintains film integrity under water exposure, boosting SPF retention in sun care

• Comfort of Wear: Creates breathable, flexible films that are comfortable on skin and hair

• Broad Compatibility: Effective in both silicone‑based and organic formulations without phase separation

Usage: Can be used in all make-up products that contain silicone or Isododecane /Isohexadecane. It is the main component in the distribution of the formula.

Mixing method: Mix in silicone or Isododecane/Isohexadecane. Can withstand heat

Usage rate: 1-30% (Choose to use at the desired level of longevity)

Product appearance: white powder

Solubility: Can dissolve in any type of silicone and LipidSoft and Isododecane /Isohexadecane.

Storage: Can be stored at room temperature. But close the bottle cap tightly. Then completely protected from sunlight or heat. The product has a minimum shelf life of 2 years.

INCI Name : Trimethylsiloxysilicate, Polypropylsilsesquioxane