Hello, Welcome to healthcare magic. Acne is due to adolescent hormones and you will continue to have it till that hormonal influence is over. But nowadays, adult cane is becoming common due to stress, pollution, hormonal imbalance, etc. Wash your face with a pH balanced face wash, preferably a one containing 1-2% salicylic acid. You may apply a gel containing clindamycin 1% in the morning over pimples and Benzoyl peroxide 2.5% gel at night over pimple prone areas. benzoyl peroxide is infact has mild bleaching properties and does not cause skin darkening. Once new pimples stop marks will go in a months time.So treating the active pimples is the best way of treating pimple marks as well. You could also get chemical peels done by your dermatologist which will help both active pimples as well as marks. Avoid creams on your face. Avoid oil on your scalp. Diet is important. Avoid milk and milk products like cheese, chocolates, sweets, sugary foods and drinks. Eat a lot of fruits rich in vitamin A (anything with lot of color). Hope this helped. Take care.