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Ouai Detox Shampoo ($26, originally $32)

We all need a detox shampoo in our routine, and Ouai's Detox Shampoo is one of our favorites for clarifying our scalps. It has chelating agents and apple cider vinegar to help eliminate buildup, flakiness, and excess oil. You only need to use it once a week, so it should last a while. Read our editor's in-depth review of the Ouai Detox Shampoo for more.

Editor Quote: "The shampoo effectively cleanses any excess oil and dry shampoo buildup. Yet it does not compromise on being gentle on my scalp and hair. Whenever I feel like my scalp needs a deep cleanse, whether it's from using too much product and hairspray or as a pick-me-up exfoliation treatment, it's the only product I turn to for a quick refresh and revamp." — AR