Zinc Oxide and Heat in Lip Balm Formulations

Regarding your question about using Zinc Oxide in lip balm formulations that require heat, and the information you saw about avoiding heat, we can confirm that Zinc Oxide is generally heat stable and can be used in formulations that involve heating, such as lip balm.

The staff's reply was correct in clarifying that Zinc Oxide can withstand heat without issues in cosmetic formulations.

Zinc Oxide is a mineral ingredient commonly used in cosmetics, particularly for its UV filtering properties in sunscreens. It is also used in products for diaper rash and as a mild antiseptic. While some specific formulations or processes might have recommendations regarding temperature, the ingredient itself is stable under the typical heat conditions used for making lip balms or other emulsion-based products.

Therefore, you can proceed with using Zinc Oxide in your lip balm formulation that requires a heating step.