Clean your makeup bag every month! A bag with a nylon or plastic liner is easier to clean that a cotton bag. Make sure your caps are screwed on tightly and lids are closed properly. This will eliminate foundation leaking and powders crumbling in the bag. Pencils and small brushes should be kept in separate snack-size Ziploc bags. To clean, empty everything out, wipe down liner and products and your makeup bag will be good to go for another month.