Skin cancer is the most common form of cancer in the United States. The two most common types are basal cell cancer and squamous cell cancer. They usually form on the head, face, neck, hands and arms. Another type of skin cancer, melanoma, is more dangerous but less common.Anyone can get skin cancer, but it is more common in people who:* Spend a lot of time in the sun or have been sunburned* Have light-colored skin, hair and eyes* Have a family member with skin cancer* Are over age 50You should have your doctor check any suspicious skin markings and any changes in the way your skin looks. Treatment is more likely to work well when cancer is found early. If not treated, some types of skin cancer cells can spread to other tissues and organs.Even though skin cancer is more common among people with a light (fair) skin tone, skin cancer can affect anyone. Skin cancer can affect both men and women.Although dark skin does not burn in the sun as easily as fair skin, everyone is at risk for skin cancer. Even people who don't burn are at risk for skin cancer. It doesn't matter whether you consider your skin light, dark, or somewhere in between. You are at risk for skin cancer. Being in the sun can damage your skin. Sunlight causes damage through ultraviolet, or UV rays, (they make up just one part of sunlight). Two parts of UV, UVA and UVB, can both cause damage to skin. Also, the sun isn't the only cause of skin cancer. There are other causes. That's why skin cancer may be found in places on the body never exposed to the sun.