Using expired make-up can be bad for your health. Oils in the formulas can go rancid and bacteria can grow in expired cosmetics. Placing these spoiled products on your skin and near your eyes can cause dermatitis and infections.
Even if your expired cosmetics don’t cause infections, they lose their ability to work properly once they have expired. For example, when oils turn rancid they lose their healing and nourishing properties. Salyciclyc acid, retinoids, sunscreen, and many more active cosmetic ingredients lose their strength over time. Old cosmetics simply won’t be as effective.
Make-up sometimes comes with expiration dates. Look at the packaging when you buy a product to make sure that it is still fresh. Buy the newest products that you can. Even if you have recently purchased make-up, throw it out if you find that the packaging says it's expired.
Not all make-up comes with published expiration dates. In this case, you need to keep track of when you bought the product and how long it should last. Simply keeping a chart of make-up expiration times and making notes on a calendar will help you know when you need to restock a certain product.
Products with more moisture in them have shorter shelf lives. Any product that comes near your eyes also has a shorter life span. A general rule of thumb is that eye products have a three to six-month life span and face products can be kept for six months to a year. Fragrances tend to stay stable for a long time, sometimes five to ten years.
Mascara, liquid eye-liner and gel type eyeshadows are common culprits in the transmission of eye infections and styes. The liquid nature of these products makes them more prone to growing bacteria, and the proximity to your eyes can cause nasty infections very easily. For these reasons, you should be diligent about replacing these products every three months.
Blush, foundation and powder eye shadow are good for six months. Lipstick and facial powder are good for a year. Nail polish can last up to two years. These products will usually not cause serious infections when they expire, but they can cause acute cases of dermatitis. It is best to follow expiration guidelines so that you don’t wind up with rashes and acne.
When products start to go bad, the formula begins to change. If you notice that your make-up is becoming cakey, has a new odor or has changed consistency then it is time to throw it out. Sometimes this happens before the expiration date is due. When in doubt, throw it out. You should not keep make-up that shows formula changes.
Expired make-up won’t necessarily show any signs of going bad. If the time is up you need to throw it away, even if it still looks and smells good. Don’t take a chance on having your face break out or your eyes getting infected. Throw out expired make-up by the deadline.