Obagi CLENZIderm MD Therapeutic Lotion BPO 5% Obagi CLENZIderm M.D. Therapeutic Lotion BPO 5% utilizes the potency of benzoyl peroxide to prevent reoccurring breakouts while effectively clearing your skin. Using benzoyl peroxide on your skin significantly reduces the possibility of experiencing future breakouts by delivering the solubilized BPO deep within the follicles, where acne starts. CLENZIderm M.D. is a revolutionary acne treatment regimen, clinically proven to provide visible evidence of acne reduction in as early as 2 weeks. For unrivaled results, CLENZIderm Daily Cream Cleanser should be applied during your daily skincare regimen along with CLENZIderm M.D. Daily Care Cream Cleanser and CLENZIderm M.D. Therapeutic Moisturizer.