What does a sunscreens SPF rating mean?
Sunscreens are assigned a Sun Protection Factor (SPF) number according to their effectiveness in offering protection from UV rays. Higher numbers indicate more protection. As a rule of thumb, you should always use a sunscreen with at least SPF 15. Q: Do sunscreens need to be reapplied during the course of a day? A: Recently developed sunscreens are more resistant to loss through sweating and getting wet than previous sunscreens. However, you should still apply generously 30 minutes before going outside and reapply frequently, especially during peak sun hours or after swimming or sweating. Q: How do sunscreens work? A: Most sun protection products work by absorbing, reflecting, or scattering the sun’s rays. Such products contain chemicals that interact with the skin to protect it from UV rays. Sunscreens help prevent problems related to sun exposure, such as aging skin and precancerous growths. Keep in mind that sunscreen is not meant to allow you to spend more time in the sun than you
