A photo of a long‑expired tube of toothpaste—dating all the way back to 1988—has gone viral on Reddit, attracting more than 50,000 upvotes. The reason? As the caption puts it: “Mom is using toothpaste ...

Active ingredients in cosmetics can degrade quickly past the expiration date, experts say. There are telltale signs that a product has gone bad. Moldy bread. Clumpy milk. The layer of fur blanketing ...