Ever Wonder Why 30?

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Jan 14, 2013

Mary B.

Order is important: Sunscreen goes on after moisturizer and other skin treatments but before makeup. If you don't wear any makeup, sunscreen should be the last thing you put on your skin. Ideally, you should wait 20-30 minutes after the last product you put on your face (or until they are all soaked into your skin) before applying sunscreen to make sure the other products don't interfere with your sunscreen's ability to form a protective layer on your skin.
Some people argue that sunscreen works best on bare skin (that way it can bond with the skin and offer better protection)When sunscreen is the outermost layer, it forms a nice shield against UV rays. Whatever you do, do not mix sunscreen with your moisturizer or foundation because that could ruin the effectiveness of the sunscreen's formulation.
Wait for your sunscreen to work: If you are using a chemical sunscreen, it's best to wait 20-30 minutes after applying before going outside so the UV filters have time to soak into your skin and form a protective layer. You don't have to wait for all-physical sunscreens. Sunscreens with titanium dioxide and zinc oxide actives are effective as soon as you put it on. However, since there are sunscreens with both chemical and physical UV filters, it's generally a good idea to apply sunscreen 15-30 minutes before sun exposure.