This product is pretty amazing! I have been using it for years now. I was first recommended by a Pharmacist to try this out for my acne prone skin and because I have very sensitive skin I found this works. I haven't used a bar of soap on my face in years. The product works very well, but it not a full cure for acne as is no product on the marker. I still get breakouts on my face every once in a while, but I would have more if I used soap. I generally use the amount the size of a quarter and lather up my face. With this amount you can do the whole face. I usually rub it in for about 30 second or so on each section of my face as per the bottle. I rarely have to buy a new bottle of this stuff. It lasts forever as I use a small amount everyday. If you want a great easy to use tool in the fight against acne, this is the one I would recommend highly!