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Ouai 16 oz Detox Shampoo ($35, originally $40)

Ouai's Detox Shampoo is one of our favorite clarifying treatments that helps get rid of product buildup and relives itchy, flakey scalps. It has chelating agents and apple cider vinegar to exfoliate the skin. It is nonstripping and color-safe due to hydrolyzed keratin, which helps soften and smooth the hair. Read more in our review of the Ouai Detox Shampoo.

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." — Anvita Reddy, assistant editor, commerce