If you find a bottle of sunscreen packed in last year's pool bag, here's a suggestion: Toss it out. Since the active compounds can degrade and lose their effectiveness, slathering on old lotion or spray is one mistake people make when trying to protect their skin.
Each year about 84,000 people in the U.S. are diagnosed with melanoma and more than 8,000 die from this type of skin cancer. In addition, millions of cases of basal cell and squamous cell carcinomas are diagnosed each year, and about 90% of these skin cancers are linked to ultraviolet (UV) radiation from the sun.
