How Often Should You Wash Your Hair, Really?
Eight questions to ask yourself before you shampoo
Not to mention shampooing can dull the color you've worked so hard to achieve, Blaisure says. "Water and shampoo can fade your hair color the more often you shampoo, especially the reds and delicate shades of blonde that are currently so popular."
Consider the damage caused by your styling routine, too; if you heat-treat or perm your hair, you should wash a few times a week with a product made for your hair type, like Bumble and Bumble Mending Shampoo, $31.
Dry shampoo can help absorb oil on your off-days, but don't treat it as a stand-in for shampoo and water. Build-up from dry shampoo can inflame the scalp and possibly lead to hair loss.
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