Here's a strange product. Strange, indeed. The Swedish brand Sachajuan has developed Scalp Scrub, a sugar scrub that is good to use once a week as a pre-shampoo treatment (note: it's not a shampoo) to relieve the feeling of dirt, dandruff, or matted hair. You'll notice that your hair is very loose, weightless, and clean, and you'll be able to space out your washes.
It's formulated with Sachajuan's classic Ocean Silk technology. It contains climbazole (fights dandruff) and soy and shea butter oil that help retain moisture without greasing. Natural sucrose helps exfoliate and "unclog" the scalp's surface of dandruff, oil buildup, and dead skin. Sounds serious: it is, and it's also pleasing. You can have it all. To exfoliation happiness.
This video shows you how to use the products in the Scalp line.