The laser beam affects the collagen present in the skin, stimulating it and promoting increased collagen production so that the acne scars "fill" with new collagen. It increases skin elasticity in the damaged area, smoothes acne scars and corrects their color. During the treatment, the skin is exposed to various processes. Since lasers affect the skin pigment melanin and the hemoglobin present in small blood vessels, their use quickly fades acne scars, whether they are red or tan.