There are many ways to deal with acne darkening and hardening, mainly the following: 1. Take oral medications to regulate endocrine secretion, while using topical anti-inflammatory and keratin-softening medications, such as tansy ketone capsules, vincristine, isotretinoin soft capsules, acne elimination pills, etc., and apply topical treatment with retinoic acid ointment, adapalene gel, and Bactroban. Adapalene gel needs to be applied point blank to avoid light, otherwise it will easily cause skin breakouts.2. Be sure to pay attention to facial cleanliness, choose warm water to wash your face, face wash suitable for oily skin, be sure to keep pores open and skin clean, prohibit the use of strong alkaline face wash or soap will stimulate the sebaceous glands to secrete sebum, aggravating the condition.3. Fire needle acne picking treatment, you can go to the hospital to do fire needle acne picking treatment, and then irradiate red light to reduce inflammation, while promoting skin repair. The actual fact is that you can do a lot more than just a little bit of work, but you can also do a lot more than just a little bit of work.