There are two main layers that make up the skin. They are the epidermis - the outer or topmost layer; and the dermis - beneath the epidermis. Like all body tissues and organs, the skin has tiny ‘building blocks’ called cells. Skin cancer happens when any one of these cell(s) begin to see abnormal and out of control growth. We name skin cancers after the type of cell from where the abnormal cell growth started. All types and tones (colors) of skin can develop skin cancer. Usually, skin cancers develop because of too much time in the sun.