Women between the ages of 25 and 29 get melanomas more than any other cancer. But most of them neglect the top stay-safe strategy: a monthly skin exam — yes, even in the winter. Skin cancer can surface throughout the year — in fact, the sun you got last summer may be the mole you see right now. Look for any change in the shape, size, or color of moles, and watch out for ones that bleed or have a crusty texture. See a dermatologist once every two years for a professional skin check — or make an annual visit if skin cancer runs in your family.