Sunscreen/BB Foundation Formula with Silk Texture and Texture Adjustment

Here is a recipe and instructions for a silk-texture sunscreen with a flesh tone, based on the provided conversation.

This recipe is a base for a BB/Foundation and needs modifications to function as a sunscreen and to achieve a specific flesh tone.

Base Recipe (Foundation/BB Silk):

• Silicone Gel Ultra Clear: 72.5%
• Titanium Dioxide Nano EasyDisperse™: 3%
• Silk Mica Powder ชนิดด้าน (Matte): 17%
• Cyclomethicone: 5%
• Silicone Blender: 2%
• SiliSolve™: 0.5%

Modifications for Sunscreen and Color:

1. For SPF and UVA/UVB Protection: It is highly recommended to add Zinc Oxide 200nm EasyDisperse™. The percentage needed depends on the desired SPF level. Adding Zinc Oxide will require adjusting the percentages of the other ingredients to keep the total at 100%.
2. For Flesh Tone: You will need to add pigments suitable for cosmetic use to achieve the desired flesh color. The specific pigments and their percentages are not provided in this conversation and will need to be determined through testing.
3. For Water Resistance: The high silicone content and the addition of mineral sunscreens (Titanium Dioxide and Zinc Oxide) contribute to the water-resistant properties of the formula.

Mixing Instructions:

The ingredients can be mixed together all at once. It is strongly recommended to use a blender or mixer that can provide sufficient shear force to ensure all ingredients, especially the powders, are well dispersed and the texture is smooth and not powdery.

If mixing by hand:

• First, thoroughly mix the liquid and gel ingredients together.
• Then, gradually add the powder ingredients (Titanium Dioxide, Silk Mica Powder, Zinc Oxide, pigments) little by little, mixing well after each addition.
• Mixing by hand may not achieve the same smooth, fine texture as using a blender.

Tip for Texture (if too oily):

If the resulting cream feels too oily, you can try replacing the Cyclomethicone with Dimethicone 1Secs.

Please note that developing a stable and effective sunscreen formula requires careful consideration of ingredient compatibility, dispersion, and testing to confirm SPF and PA values.