Back acne treatment

It is bad enough to get acne on your face but worse if you get them on your back! With face acne I can keep my face clean to prevent acne from getting worse but what do I do with my back acne? Is there some sort of back acne treatment that I can use? And even if there is, how do I reach my back? I’m going to need someone to help me every time I treat my back acne!