The recovery time for severe acne generally takes 6 months and is mainly affected by the degree of lesions, such as the presence of severe acne papules, pustules, nodules, and also the formation of aggregated acne, etc. The general treatment time is as follows: I. Medication 1. If inflammatory lesions are present, manifested as inflammatory papules, pustules, nodules, etc., combined medication treatment is often required under the guidance of a professional doctor, such as oral antibiotics combined with topical benzoyl peroxide or vincristine, which generally requires 3 months of treatment before it may be effective; 2. If there is convergent acne, scattered papules, pustules, and cysts are visible, which are prone to recurrent attacks. The treatment method is the same as above, but if the situation is serious, abscesses can appear, requiring the use of hormonal drugs such as prednisone treatment, the treatment time generally takes 6 months, if you do not pay attention to daily care, it may take even longer to see results. Second, physical therapy for more severe acne and its scarring may require laser, dermabrasion, fruit acid peels, and injection therapy. Usually, there will be significant results after treatment, but there is repetition, and there is also a time interval between each treatment, and it may also take 3-6 months before the recovery of appearance can be observed. Therefore, patients with severe acne need to pay attention to daily care, use warm water to wash and clean the skin, avoid using oil and fat, powder cosmetics, avoid staying up late, go to bed early and wake up early, eat a light diet, eat more fruits and vegetables, and avoid spicy and stimulating foods.