I have used this for about 2 years now. Whenever it comes time to buy a new bottle (only about twice a year!) I rethink whether it is worth it, but it definitely is. My face has never been so clear and blemish free as when I use it. I use it after every face wash without fail, along with the oil free moisturizer. It lasts a long time, feels great, looks great, and will continue to be on my daily regime!