Expired hair products won't do your hair any good.
, we take expiration dates seriously. After all, just as past-its-prime food can make you sick, past-their-prime beauty products can be at best ineffective and at worst moldy, irritating, and full of enough bacteria to give even the bravest of us the heebie-jeebies. What you may not realize, though, is that there's a whole other segment of your beauty routine that you may have been leaving out to spoil: your hair products.
Unlike food, the FDA doesn't require expiration dates on makeup, skin, or hair products. But that doesn't mean you're on your own when it comes to figuring out if your mousse is past its prime. Here, experts explain what expiration means in the context of deep-conditioning masks, pomades, and shampoos, as well as how to figure out if any of your hair-care or styling products are kaput.
Luckily, using a contaminated hair product doesn't pose as great a threat as using contaminated skin care or makeup. "The risk is definitely lower with hair products since it isn't on your skin or around sensitive areas like the eyes and mouth," Dindio says. "But it's still not a good idea to continue use."Unfortunately, it's entirely up to each individual brand if it wants to print an expiration date on its products, so many simply don't.
No PAO mark on your favorite shine serum? No problem. "When in doubt, there is a batch code on every product, usually on the bottom of the package, which consumers can call to ask the company when the product was manufactured," cosmetic chemist Ginger King tells. Once you have that information, you can make an educated guess regarding how long to hold onto or use the hair product in question.
Of course, some products are more resilient than others. Anything that comes in an aerosol can, particularly if it contains alcohol has a pretty serious shelf life because of its limited exposure to air. "In general, shampoos or powder products are OK beyond six months of expiration, but anything that is a cream or mask — emulsion types — you may experience them turning like cottage cheese or separating and they will not be the best to use," King says.
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