Lasers make it possible to perform high-precision procedures to remove unwanted hair and reduce the appearance of fine lines, wrinkles, sun damage, scars, uneven pigmentation, stretch marks, birthmarks, port wine stains and vascular lesions. Other uses of lasers include facial skin resurfacing, smoothing acne scars, rejuvenation of aging skin, removal of freckles, treatment of liver spots, and facial capillaries.