If you’re dousing your hair with dry shampoo, hairspray and mousse, a dollop of shampoo every few days isn’t sufficient to chop through layers of sweat, oil, product and exhausting water buildup. All that gunk can block your follicles and settle onto your scalp, which ends up in uninteresting, breakage-prone hair. Enter scalp scrubs, by which components like sugar, salt, charcoal and microbeads gently exfoliate lifeless skin cells and oils from your scalp, leaving the pores and skin in your head cleaner and shinier. These little wonders are filled with zinc, in addition to nutritional vitamins A and K and …
