A facial skin lesion is a flaw that could be a lump, crack, ulcer or abnormal discolouration of the skin that is not normally present. A lesion is described as benign when it is harmless. It is described as malignant when it is a sign of skin cancer and is potentially dangerous. The majority of skin lesions are benign but some could be malignant. Benign skin lesions may be unsightly or may be damaged repeatedly especially during shaving. Naevi is a medical term for skin moles. They are often darker than the surrounding skin (brown or brown-black) because they contain more pigment (colour). Rarely, some moles can develop into malignant melanoma especially when they are exposed to a lot of sunlight.