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How do sunscreens and sunblocks work?


Answers From Experts & Organizations (1)

17 Answers
156 Helpful Votes

Most sun protection products work by absorbing, reflecting, or scattering the sun's rays. These products contain chemicals that interact with the skin to protect it from UV rays. Broad-spectrum sunscreens protect against UVA and UVB rays, the two main components of the sun's rays. UVA and UVB rays damage the skin in different ways, but both can lead to the development of skin cancer. It is important to note that UV exposure increases the risk of skin cancer, premature skin aging, and other sun damage, so it is also important to limit time in the sun (especially in the mid-day when UV exposure is greatest), and to wear protective clothing.

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