You’ve likely heard several opinions on how often should you wash your hair. Some people can’t start their day without a vigorous wash, while others live and die by their dry shampoo. The good news is: They’re all right.

“Unfortunately, there’s no universal answer for this,” Joesph Maine, a celebrity hairstylist who works with Sophia Bush and Ashley Benson, tells TZR. “Different hair textures and lifestyles can require different regimens.” To be clear, shampoo is a non-negotiable in most routines. “If you don’t wash enough, you may have a buildup of oil. This is more of a concern if your hair is naturally oily, which can also lead to dandruff and itching,” Dr. Peterson Pierre, M.D. of the Pierre Skin Care Institute tells TZR. Dandruff is usually a reflection of inflammation and irritation occurring in the scalp that leads to dryness, itching, and flaking. “It’s important to moisturize and condition the scalp to decrease the chances of developing dandruff,” the dermatologist says.

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