(1) Usually pay attention to cleanliness, wash your face with an oil-eliminating cleanser every morning and evening. (2) Exfoliate at the right time every week to avoid clogged pores. (3) Regular use of collagen mask can not only inhibit the deterioration of acne, but also make the pores more delicate. (4) When choosing maintenance products, low or no oil gel or refreshing lotion (such as Winona, Avène Revitalizing Series) is the main choice. It is also necessary to strengthen moisturizing work to avoid the face from dryness that causes more oil secretion. (5) When there are red inflamed pimples on the face, it is not advisable to exfoliate or massage the face excessively, as this will only worsen the pimples. (6) Diet should be moderate, avoiding sweets, chili peppers or foods rich in fat, and even baked goods such as bread and cookies in serious cases. Eat more fruits, vegetables and steamed foods. (7) Avoid the abuse of cosmetics or hormonal topical preparations. (8) Maintain regular and normal work and rest, do not stay up late, do not smoke and drink; develop the habit of regular bowel movements every day to avoid toxin deposition. (9) Once a week, you can take a bath to promote blood circulation throughout the body and accelerate the elimination of toxins; at the same time, you should also exercise more, sweating will drain the skin of dirty things, the skin will be smoother. (10) Don’t squeeze the pimples casually, improper external treatment will only cause pits and scars, consult a specialist if necessary.