Sunscreen Formulation without Water and Silicone

Regarding your formulation using SPF Protect Ultra 30% and Lipid Soft Lite, aiming for a light, milky texture without silicone:

• You are correct that a preservative is not necessary in this formula because it does not contain water.
• Adding additional Zinc Oxide is not needed. SPF Protect Ultra at a concentration of 30% already provides very high SPF/PA protection on its own.

This approach aligns with the staff's advice, confirming the stability of the waterless formula without a preservative and the sufficient sun protection provided by SPF Protect Ultra at the proposed concentration.