Sunscreens are assigned a sun protection factor (SPF), which is a number that rates how well they block UV rays. Higher numbers indicate more protection. You should use a broad spectrum sunscreen with SPF of 15 or higher. Reapplication.
The rise in the incidence of skin cancers over the past decades is strongly related to increasingly popular outdoor activities and recreational exposure. Overexposure to sunlight is widely accepted as the underlying cause for harmful effects on the skin, eye and immune system. Experts believe that four out of five cases of skin cancer could be prevented, as UV damage is mostly avoidable.