Revised Silicone Sunscreen Formula

Okay, I understand you're aiming for a thicker texture for your silicone-based sunscreen, similar to the Spectraban SC you tried, and want to avoid using Oil-Fix due to concerns about clogging. You've tried the previous formula suggestion and found it too liquid and still showing slight separation.

Based on your goal and the staff's latest suggestion, the most effective way to achieve a thicker texture using the specified ingredients is to change the type of Silicone Gel used. The staff recommended using "Silicone Gel (Thick & Smooth, Cyclomethicone Base)" which is designed to provide more viscosity compared to the "Ultra Clear" type.

Here is a revised formula suggestion incorporating the "Silicone Gel (Thick & Smooth, Cyclopentasiloxane Base)" and using the previously suggested percentages for the other ingredients. Note that "Cyclomethicone Base" typically refers to Cyclopentasiloxane, which is already the base for the recommended Silicone Gel, so adding extra Cyclomethicone is not necessary and might make the formula too thin.

• Silicone Gel (Thick & Smooth, Cyclopentasiloxane Base): 78.7%
• ETHYLHEXYL METHOXYCINNAMATE: 10%
• C12-15 alkyl benzoate: 5%
• Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine: 2.3%
• Siliwax Lite (Cetyl Dimethicone): 2%
• Diethylamino Hydroxybenzoyl Hexyl Benzoate: 2%
• Cyclomethicone: 0%

Total: 100%

This formula uses the "Thick & Smooth" Silicone Gel which should provide a significantly thicker base compared to the "Ultra Clear" version you previously used.

Mixing Method

1. Combine ETHYLHEXYL METHOXYCINNAMATE, C12-15 alkyl benzoate, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine, Siliwax Lite, and Diethylamino Hydroxybenzoyl Hexyl Benzoate.
2. Gently heat this mixture (around 40-50°C) and mix thoroughly until all solid or semi-solid ingredients are completely dissolved. The mixture should appear clear.
3. Add the Silicone Gel (Thick & Smooth, Cyclopentasiloxane Base).
4. Mix well until a uniform, thick gel texture is achieved. Be careful not to whip in too much air.

Regarding the small white particles you observed in the original product you tried, the staff mentioned that if UV filters are not fully dissolved, they can appear as particles and reduce the sunscreen's effectiveness. While the original product might have had these particles, ensuring full dissolution in your homemade version by gently heating the oil phase is crucial for optimal sun protection, even if it results in a clear texture rather than cloudy.

If this revised formula is still not thick enough, you could try slightly reducing the ETHYLHEXYL METHOXYCINNAMATE and C12-15 alkyl benzoate further and increasing the Silicone Gel percentage, but do this cautiously to ensure the UV filters remain fully dissolved.