Over the past 60 years, skin cancer has become the most common form of cancer in the United States and has become a major public health issue, drawing a call to action from the U.S. Surgeon General. Preventing skin cancer, in theory, is simple. The American Academy of Dermatology recommends using abundant amounts of sunscreen and covering up as much as possible. Needless to say, this is cumbersome — which is why most people just use their best judgment.