Makeup brushes made of natural hair are moderately expensive, but many women feel they're worth it. Nothing gives you the fresh, finished look you get when you use quality brushes. If you want your brushes to last, however, you've got to keep them away from dust and bacteria. Store your brushes in a clean environment, and they'll last for years.
Buy a set of brushes and use the roll-up storage bag that comes with them. You can also buy these storage bags at most beauty supply stores, drugstores and cosmetics counters. Look for a roll-up bag with separate compartments for each brush.