Even if the container’s still half-full, it’s important to know when it’s time to buy a new mascara, foundation, face power or lipstick. Why? Because once the container has been unsealed, cosmetics can become breeding grounds for bacteria.
The makeup item with the shortest lifespan is the mascara. Each time you use the brush applicator and put it back inside the tube, it collects some bacteria along the way. Experts advise switching mascaras at least every two to three months. Using a contaminated mascara can cause conjunctivitis, sties and other eye infections.
Eye shadows and eye liners must be replaced after 3 months.Water-based foundation and liquid concealers can last for 6 to 12 months. Blush and face powder can last for 12 months up to 2 years, if they are used and stored properly. Lipstick and lip gloss have a lifespan of 12 months.
Brushes and applicators must be cleaned regularly and stored properly. If you use your fingers to dab on eye make-up, be sure to wash your hands first. To avoid bacteria build up, it is recommended to wash face powder sponge after each use. Here’s an article that discusses more about expiration dates and make-ups.