How can i treat my mild acne ?

Manage it: It's not curable but can be controlled, and will remit on its own when you get old, though the exact age is unpredictable. Topical benzoyl peroxide of a strength you can tolerate; once a day is probably as good as more often. If this does not keep things at bay, your physician can add a stronger Rx. Acne is basically unrelated to diet, hygiene, touch, or anything else. Best wishes.