It’s not exactly a beauty treatment — but it could save your skin. Nationwide, one in five Americans will develop skin cancer in their lifetime, and a staggering 9,500 people are diagnosed every single day in the US. For many, the disease begins with a common precancerous condition. Luckily, doctors say there’s a highly effective treatment that can stop it in its tracks, though the process won’t be pretty. “My attending at the [Medical University of South Carolina] used to tell patients that