Obagi Clenzidern is a foaming acne wash that leaves your face feeling tingly, refreshed and clean. I did apply a light moisturizer following the use of this product because it left my face feeling a little dry and tight. Some of the ingredients include salicylic acid (2%) and methol. In terms of results, for the few weeks that I have been using this product, I have not noticed any real irritation or peeling. My complexion seems clearer and smoother, more even. How do I know this? Well, I had not seen my mother for about two weeks and when I did see her she said that my face looked some smooth like I had on makeup. I had only washed my face and put on a light moisturizer. So while I may not be able to see all of the benefits, others can.