My chest is starting to get really red and irritated, but the Acne.org Regime for body acne doesn't say to moisturize.Or should I just cut down on the BP until my body gets used to it.
I'd say definitely moisturise as it should soothe the irritation. Nothing wrong with moisturising your body, I guess maybe some people just don't need to. I would always moisturise anywhere I was putting benzoyl peroxide as it's pretty harsh on the skin.
The AHA+ is a built-in moisturizer, but feel free to also follow up with the regular moisturizer for extra hydration. Also, consider adding some jojoba oil!!