Instead of buying expensive facial products, I mix up my own "toner" using 1/2 water, 1/2 vinegar and a few aspirins. The acids in the vinegar force your old skin cells to flake off, much like the store-bought "alpha hydroxy" products. The aspirin is my own anti-acne solution. A lot of acne products use salicylic acid, which is basically aspirin with a few small chemical differences. The aspirin won't dissolve completely, but it doesn't seem to matter. This works especially well against those big, deep acne spots which older people often get. I've been using this twice a day on my face for five years now and people are always amazed when I tell them my real age (44). One caution, though: Be sure to also use a face lotion with at least SPF 15 everyday--even in winter (Oil of Olay knock-offs are fairly cheap)--because the vinegar mixture will make your skin thinner (just like the expensive store-bought ones will) and more susceptible to sun damage. The SPF prevents age spots from forming, and that's worth the money in my book.
Apple Cider Vinegar
Here's a description we found on the internet of how apple cider vinegar helps cure acne. The author is unknown:
"When the blood is deficient in some minerals or biochemic salt, ill-health is the outcome e.g. boils break out, suppurating blisters become apparent, pimples appear on the face etc. It has been found however, that cider vinegar helps with the cleansing as well as the clotting of the blood. Oxidation of the blood is very important and cider vinegar is again an effective treatment for this. Besides introducing the important minerals into the blood stream, as mentioned above, cider vinegar also helps in the clotting of blood. This is of tremendous help to those people who are commonly termed 'bleeders', as they live their lives in fear of cutting themselves due to the bloods inability to clot, and it will also enhance the healing process."