Mohs micrographic surgery a common approach to treat skin cancer. The surgeon removes one layer at a time and examines it for cancerous cells under the microscope. Once a cancer free layer is reached, the surgery is over.
My wife grew up playing in the sun. Now that she is older it caught up to her because she has skin cancer. She has been getting skin cancer surgery to get her over it. Just make sure you to wear sunscreen to prevent skin cancer.