Hi ron_shelf,
I am of the belief that if you are mixing a bunch of ingredients, albeit at home, you are essentially making an acne medicine. I believe that mixing ingredients is a science and anyone can do it. Therefore, it think making effective acne medications should be left to guys with with coats who work in labs. You and your skin would be much better of purchasing and acne product that is specifically formulated with a right blend of ingredients to produce the required results rather than "hope for the best approach".
despite my views, here are some skin care home remedies for acne.
good luck.