Various lasers can be used to treat a number of unwanted marks or lesions on the skin. These include vascular birth marks, sun spots (called lentigos), spider veins or telangiectasias on the face and legs, tattoos, and other long-lasting skin color changes brought on by sun damage or by such dermatologic conditions as rosacea. These lasers typically have none or very little down time, and often times no anesthesia is required for the procedure.