When I ran out of the Proactiv toner I decided I wanted something more natural and a lot less expensive. I searched around for recipes for making your own and finally found one with products that I already had on hand. I've been using it for a few weeks now and it works just as well as any of the more expensive toners that I've used before.
Essential Oil of your choice
Mix about 70% witch hazel to 30% water (you can experiment with what your skin will need...the next batch you may want less or more witch hazel). Add a couple drops of the essential oil. All I had on hand was tea tree oil, which is great for oily and problem skin. The mixture doesn't smell great but you get used to it after a few days and the smell goes away when dry. Study the essential oils to see what is best for your skin type - chamomile would be great for dry or sensitive skin, orange oil for greasy, and so on.
I estimate each bottle worth (which should last me a month or more) to cost about 10 cents.