Canon Ryder is a California-based teen who recently had a bad reaction to a face product. He told BuzzFeed that he later found out it was over 7 years old!
Canon said he discovered the age of the product after finding a website called Cosmetic Calculator on Google. Once you select the brand, you simply enter the batch code number on the bottom of the product, and it will tell you the date of manufacture and the general shelf life of that particular item. (I tried it and can confirm it worked.)
So Canon decided to go to a few stores to check the dates on makeup and cosmetic products using this website. In the TikTok below, he discovered that an Olay product currently sold at a third-party store was almost 10 years old:
Canon's TikTok went viral with over 4.6 million views, and commenters say that some stores never check the expiration dates on products they sell.



Canon also checked products at mainstream cosmetics stores. "I found a tinted moisturizer that was 3 years old, as well as a concealer that was 2 years old. I think it is very important to check anything you are applying to your skin, especially your face," he said.
According to the Cosmetic Calculator website, the expiration date of a product will be printed on the container if it has a shelf life that is less than 30 months. To find out how long you can use your product after it's been opened, they've created this chart below (PAO stands for "period after opening"):
