Waterproofing Ingredients for BB Cream

To make your existing BB cream base waterproof, you can add film-forming polymers. These ingredients create a thin layer on the skin that helps the product resist water and stay on longer. The best choice depends on whether your current BB cream base is water-based or oil/silicone-based.

Here are some options for waterproofing agents:

Water-Based / Water-Dispersible Film Formers

These are suitable if your BB cream base is primarily water-based (Oil-in-Water emulsion).

• Syntran 5778: A water-dispersed film former that provides long-lasting and waterproof properties. It is mixed into the water phase. Typical usage rate is 10-70%.
• Syntran 5288: Similar to Syntran 5778, this is a water-dispersed film former for long-lasting and waterproof products. Mixed into the water phase. Typical usage rate is 10-70%.
• Allianz OPT (Acrylates/C12-22 Alkyl Methacrylate Copolymer): A polymer film former that provides water and wear resistance for long-lasting cosmetics. It is dispersible in water and does not significantly increase viscosity, making it suitable for lower viscosity formulas. Typical usage rate is 1-5%.

Oil-Based / Silicone-Based Film Formers

These are suitable if your BB cream base is primarily oil or silicone-based (Water-in-Oil or Silicone-in-Oil emulsion).

• Silicone Film (Soft Film, Low Viscosity, Isododecane Base): A Trimethylsiloxysilicate silicone film dissolved in Isododecane. It helps make makeup long-lasting and waterproof. Mix into the silicone or oil phase (like Isododecane/Isohexadecane). Typical usage rate is 1-30%.
• VP/Eicosene Copolymer: An oil-soluble film former that provides waterproofing and a solid film texture. It can be mixed into the oil phase, using heat to help incorporation. Typical usage rate is 0.1-10%.
• Trifluoropropyl Methicone: A fluorosilicone that provides water and oil resistance, commonly used in long-lasting makeup. It needs to be emulsified into the formula. Typical usage rate is 1-50%.

Important Considerations:

• The exact amount needed will depend on your specific BB cream formula and the desired level of waterproofing. You will need to perform testing to find the optimal concentration.
• Ensure the film former is compatible with your existing BB cream base (water-based film formers for water-based emulsions, oil/silicone-based for oil/silicone emulsions).
• For a 100kg batch, calculate the required amount based on the percentage you choose to use.

By incorporating one or a combination of these film-forming agents, you can significantly improve the water resistance of your BB cream.