If your back acne is not yet severe, you may still use anti-bacterial cleansers that are designed for facial acne. Nowadays, there are also anti-acne soaps that can be used not just for the face but for body as well. Avoid using regular soap. These soaps may not meet the demands that your sensitive skin needs.
This would prevent your back from heating up which results to more perspiration and breeding ground for bacteria that causes back acne.
One of the best ways on how to cure back acne properly is to use gels or creams containing at least 10 percent benzoyl peroxide. They can be bought at drugstores even without any prescriptions from a dermatologist (skin doctor).
Studies show that benzoyl peroxide works better when used with products having alpha-hydroxy. This will heal and dry up back acne two times faster.