What is the best away to avoid acne?

Treat don't avoid: You're young and report you are male, and you are going to have some acne because of how your body is developing. You can start with benzoyl peroxide over the counter, and a physician can provide you with topical Clindamycin and/or a retinoic acid derivative. For long-term prevention, your physician may put you on a systemic antibiotic such as tetracycline or a macrolide. Stronger rx's exist.