What is an important benefit of physical sunscreens?

An important benefit of physical sunscreens is that they provide immediate protection from UV rays. Unlike chemical sunscreens, which often require about 20 minutes after application to become effective as they need time for the ingredients to absorb into the skin and start working, physical sunscreens contain active mineral ingredients, typically zinc oxide or titanium dioxide. These minerals create a physical barrier on the skin that reflects and scatters UV radiation.

This means that as soon as a physical sunscreen is applied, it is already protecting the skin from harmful UV rays. This immediate protection is particularly beneficial for individuals who may forget to apply sunscreen in advance of sun exposure or for those who need quick protection while outdoors. The formulation of physical sunscreens also typically includes ingredients that are less likely to irritate sensitive skin, making them a favorable option for many users.