Formulating Water-Based BB Cream with Titanium Dioxide

Here is information regarding your questions about formulating a water-based BB cream with titanium dioxide:

1. Solutions for Dispersing Titanium Dioxide in Water for a Water-Bursting BB Cream

To make titanium dioxide mix well with water for a non-greasy, water-bursting BB cream with a dry finish, you should use titanium dioxide that has been specifically treated or prepared for water dispersion. Examples include:

• Titanium Dioxide 250nm WaterDisperse™: This type is coated with Aluminum Hydroxide to help it disperse well in water and adhere better to the skin. It is suitable for makeup formulas needing coverage.
• WaterMix™ White: This is a pre-dispersed liquid form of titanium dioxide in water, making it easy to incorporate into water-based formulas like BB creams. It contains dispersing agents like Ammonium Acrylates Copolymer and PEG-40 Castor oil.

Using these water-dispersible forms is key. The overall formulation, including the emulsifier system (if creating a water-in-oil or water-in-silicone emulsion for the water-burst effect) and other ingredients that provide a dry feel, will contribute to the desired non-greasy, dry finish.

2. Most Waterproof Titanium Dioxide for Heavy Water Exposure

For strong water resistance suitable for activities like Songkran, you need titanium dioxide with a hydrophobic surface treatment. The following types are designed for waterproof makeup:

• Titanium Dioxide 300nm WaterProof™ (Triethoxycaprylylsilane Treated): This is coated with Triethoxycaprylylsilane, providing excellent water resistance and long-lasting properties for makeup.
• Titanium Dioxide 250nm WaterProof™ (Dimethicone Treated): This type is coated with Dimethicone, also providing good adhesion and waterproof properties for makeup.

Both of these treated titanium dioxide options are suitable for formulations requiring high water resistance.

3. Properties of PEG/PPG-20/15 Dimethicone

PEG/PPG-20/15 Dimethicone is a water-soluble silicone (specifically, a polyether dimethicone copolymer). Its main property is to provide a smooth texture to the skin or hair in cosmetic formulations. It is commonly used in water-based products and can also help stabilize foam in products like shampoos.