My nephew is suffering from acne and his dermatologist prescribed erythromycin, benzoyl, and tretinoin. For some months he has been using them, still, he breaks out and have a lot of whiteheads. Could it be that he had become resistant to those acne treatments? We’re trying to look for answers on the internet and hopefully, find a treatment that would work fast and effectively. The problem acne is putting down his self-esteem.