The duration of laser fractional treatment for acne pits varies from person to person and usually takes about six months to a year of treatment. Fractional laser is used to treat acne pits by stimulating the regeneration of collagen fiber tissue and elastic fiber tissue. It takes about six months to a year to get rid of acne pits and the results vary from person to person, usually done once a month. After the patients do the fractional laser to get rid of acne pits, due to the trauma is large, the skin may have the phenomenon of bleeding, scab or local redness and swelling, the burning pain is more obvious, so you can’t get wet on the same day, and you can’t get wet within seven days of the scabbing period. After 7 to 10 days of fractional laser, the scabs will gradually fall off, and after falling off, the local area will be red, and the red marks will gradually fade away. In the process of fading, some patients will have hyperpigmentation, usually 1 to 2 months to gradually improve, if you do not pay attention to sunscreen, the time of hyperpigmentation will be prolonged. When you need to do laser fractional treatment for acne pits, it is recommended to go to a professional medical institution for treatment.