Can I mix sunscreen with moisturizer?
Mixing sunscreen with moisturiser before applying is not recommended. It dilutes the sunscreen and disrupts the UV-filtering layer it forms on the skin, which reduces protection below the labelled SPF. The correct approach is to apply each product separately, moisturiser first and then sunscreen as the final step.
Sunscreen is formulated as a complete system. The UV filters, their concentrations, and how they spread across the skin are all calibrated to deliver a specific level of protection when applied correctly. Mixing it with another product changes this balance and makes the final SPF unpredictable. Some people mix to improve texture, but this is a sign that the sunscreen itself is not the right formula. If a sunscreen feels too heavy or uncomfortable to apply alone, the solution is to find a lighter formulation rather than diluting the current one.