I have been using Proactiv solution for almost three years now and it has really helped my acne problem. Growing up I was constantly visiting a dermatologist and had tried everything from oral pills to topical solutions and nothing helped as much as Proactiv. It comes in three different solutions that you use morning and night, but I usually just used it at night because it helped enough just once a day for me. I was extremely pleased with the results and the only thing I didn't like is that when you sign up with Proactiv to buy their products they keep billing you every 3 months to receive more proactiv solution and it took me much longer to use up the products. I didn't like being automatically billed for a product I didn't need yet. Otherwise the product was excellent.