Detailed answer

Sunscreen should not be used on your lip enhancing oil serum tube. Sunscreens are specifically formulated for use on the skin and may contain ingredients that are not intended for the delicate skin of the lips. It is best to use lip products with SPF that are designed specifically for lip care, as these products are created to provide protection and nourishment to the sensitive lip area. Additionally, lip enhancing oil serums are typically not intended to be combined with sunscreen, as they are designed for a different purpose, such as providing hydration and enhancing the appearance of the lips.