Today's the first day of Spring. Now's a good time to clean out your cosmetics. Toss old, out-dated cosmetics and refresh your supply.
To help reduce your risk of getting infections from bacteria-laden makeup, here's a general guideline for the lifespan of your cosmetics. https://www.violetbody.net/blogs/news/lets-talk-dirty
A good way to remember to refresh your cosmetics is to time it with the change of the seasons.