We've all been there: you discover the perfect new shampoo that leaves you with hair to rival the Duchess of Cambridge, so you stock up on the stuff, only to find that it doesn't seem to be having the same magical effect after a few washes, amiright?
But can your hair really "get used to" a particular shampoo? Marie Claire spoke to celebrity hair stylist for Dove Cynthia Alvarez, who explained that there are a number of contributing factors to your hair conundrum, but basically, it's not the shampoo:
"A shampoo does not stop working because your hair gets used to it. If your shampoo stops giving you the results you want, the condition and needs of your hair have most likely changed, or the season may have changed—it's more humid, the sun is stronger, or the air is dryer. Your state of health or hormone levels may also be different from a recent illness or your monthly cycle."
In other words; it's not your shampoo, it's you (or the weather, the water…anything but the product, basically.)
So what can you do to make sure your hair doesn't feel as dry as straw at random times? Alvarez recommends changing up your haircare routine when factors change, such as the weather—try a product that promises sleek hair to combat humidity, or moisture-rich formulas when it's chilly. You can also rinse with filtered water and don't over-shampoo or condition—scalp care is key to great hair, apparently.
So no need to find a new product again, just switch up your routine. WIN.
This article originally appeared on Cosmopolitan.co.uk. Minor edits have been made by the Cosmo.ph editors.