Back Acne

Help! I have such bad back acne constantly, and I've done everything I can think of to fix it. I shower daily and wash with an antibacterial soap, I moisturize after every shower, and I even started rinsing my conditioner and shampoo out before I washed my body to confirm that wasn't breaking me out. I've tried face soaps and serums designed for acne too but nothings worked.