"Prevention, as they say, is worth a pound of cure. Frequent combing is often all it takes to resolve the problem. But brushing won't do. Brushes tend to slide over the surface of the fur and don't get all the dead hair out. For shorthaired cats, a fine-toothed flea comb is best. Longer hair may require a wide-toothed comb, or one with revolving teeth to prevent tearing out the hair.
Many hairball-plagued cats will try to self-medicate by eating grass or plants. The coarse plant fibers will cause the cat to vomit, and hopefully, the irritating hair will come up as well. Not all grass-loving cats have hairballs, however. You need to carefully observe your cat so you can accurately report the situation to your veterinarian."
Source:
http://www.catsofaust...om/hairballs-cats.htm