Prevention Most skin cancers can be prevented by avoiding excessive exposure to the sun. When your shadow is shorter than you, limit your sun exposure. When outdoors cover as much skin as possible, wear a hat that shades the face, neck, and ears. Use a sunscreen with an SPF of 15 or higher. Know your family history.
Early detection is crucial.
Regularly inspect your skin with a mirror or help of another person. Look for unusual moles, spots, bumps or sores that won't heal. Suspicious lesions should be promptly examined by a physician.