sunscreen
A substance that helps protect the skin from the sun's harmful rays. Sunscreens reflect, absorb, and scatter both UVA and UVB radiation. Using lotions, creams, or gels that contain sunscreens can help protect the skin from premature aging and damage that can lead to skin cancer.
Read more about protecting your skin from the sun.
Audio contributed by: Marisa Weiss, M.D.
