Do serums really expire? Do skincare products expire? Skincare products do indeed expire. Even the most expensive skincare creams, serums, oils, tinctures, and ointments eventually go bad enough that you’re probably going to want to throw them away.
How long does a serum expire? Specific ingredients can vary, but in general, Spinnato says, once an ingredient is added to a product, it will degrade over time anywhere from one to three years. There are exceptions to that, however, such as silicones, powders, and synthetic fragrances that can last for 10 years or longer.
Can you use expired serum? When you use these products past their expiration date, they simply won’t be effective anymore, and you’re losing out on all the benefits that a good serum or essence can offer your skin. One exception is vitamin C serums, which often have a shelf life of around three to six months.
How do you know if a product is expired? Products will contain an unopened or shelf-life expiration date on the packaging. This date tells us when a product expires even if it remains unopened and unused. Manufacturers typically print the second expiration date on the product.