When is it time to TOSS IT!?

Make Up like food has an expriation date as well.  expired make up can cause growing bacteria that can leave rashes, blemishes, and cause other bacteria on the face and eyes.  its always good to keep track of how long you have had a certian product from the time its opened always good not to share certain products like eye liner and mascara.  one way to keep track is by applying small sticker lables to your make up with the date it was opened and follow this time line...
Expiration dates — beginning from the time you first open these products
Powders and shadows: 2 years
Cream shadows: 12 to 18 months
Foundation: 1 year
Lipstick & lipliner: 1 year
Mascara & eyeliners: 3 months
Makeup brushes: Clean weekly using a mild detergent
Makeup sponges: Replace weekly, or when sponge becomes soiled
Tips for keeping your skin clean and your makeup fresh
— Smell your cosmetics; if they have an unusual odor, they may contain bacteria and should be discarded.

— Always make sure that products are closed tight and stored out of sunlight, as this can destroy the preservatives.

— Don't use any eye products if you currently have an eye infection.

— Never add any liquids to products unless directed by the manufacturer.

— If there are any changes in color and texture, dispose of the product immediately.

— Avoid sampling makeup at department stores when possible. If you do test, never apply directly from the makeup. Instead, use a clean, disposable applicator (i.e., cotton swab, sponge) to apply cosmetics.

There are ways you can keep your make up clean as well always us disposiable mascara wands when sharing and dont double dip same with lip wands. you can clean your lip sticks with alcohol as well if u r sharing.
these are just a few tips to help you keep the best make up collection possible.