A mineral sunscreen is a type of sun protection product that uses natural minerals to block and protect your skin from harmful UV rays. The key active ingredients in mineral sunscreens are typically zinc oxide and titanium dioxide. These minerals work by sitting on top of the skin and physically blocking UV rays from penetrating the skin, as opposed to chemical sunscreens, which absorb UV radiation and convert it into heat.

SPF 50 mineral sunscreen generally provides high protection against UVB rays, but its effectiveness can diminish over time due to factors like swimming, sweating, or towel-drying. For optimal protection, it’s recommended to reapply mineral sunscreen every two hours, immediately after water activities, or after excessive sweating.

Dermatologists often recommend mineral sunscreens because they tend to be less irritating than chemical sunscreens, are suitable for all skin types, and usually have a more immediate effect. They can also be less likely to break down in the sun.

Mineral sunscreens contain ingredients like zinc oxide or titanium dioxide and are generally less likely to clog pores than chemical sunscreens. They are often recommended for people with acne-prone or sensitive skin. Many mineral sunscreens are formulated to be non-comedogenic, meaning they won’t clog your pores.