I purchased this product because it is medical grade toner for oily and acne prone skin.  It has only 2% salycilic acid, but it feels much stronger.  I use this toner in the morning and at night after cleansing the skin.  It definitely controls oil production and keep skin blemish free.  I used to be devoted to Obagi products, but ever since I finished my esthetics licensure, I am finding myself drawn to try other medical grade products.  One of the biggest competitors in medical grade products with this line is Neocutis and IS Clinical.  I Love Neocutis skin care and IS sunscreen products.  Obagi has unfortunate fallen down the list.  Still good products, but when it comes to the price, I am convinced that there are others that are price competitive and superior in quality.  I will still buy Obagi if I find a good deal, but unfortunately it is no longer my first choice.  I would still recommend products from this line to anyone.