Hi. Thanks for posting your concern at HCM Acne commonly involves face, trunk, chest and shouders (all these areas are rich in sebaceous glands). All these areas may or may not be involved simultaneously. You said that you are already using Benzoyl Peroxide 2.5 %. If i were your treating doctor i would have advised you to continue with that. Its used in both OTC and prescription acne products. 2.5 % cream/gel is recommended for use on face once or twice daily. In addition to that, I would advice that you be put on a course of oral antibiotics like Doxycycline OR Azithromycin for 4-6 weeks. In my practice i start my patients on oral retinoids (Isotretinoin) if they present me similar to you. Oral retinoids are Sebostatic(decreases oil production), normalises keratinization, are anti-inflammatory and decreases proliferation/population of Propionibacterium acnes as well as yeast(which feeds on your oil) in hair follicles. You should visit a dermatologist to get a prescription for oral anti-acne medications(Antibiotics and Retinoids). take care regards