Shampoo

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Shampoo is a hair care product, typically in the form of a viscous liquid, that is formulated to be used for cleaning (scalp) hair. Less commonly, it is available in solid bar format. Shampoo is used by applying it to wet hair, massaging the product in the hair, roots and scalp, and then rinsing it out. Some users may follow shampooing with the use of hair conditioner.

Wikipedia. CC BY-SA 4.0. Updated Jul 20, 2026.