WOW COMB What it is used for: -Root shadowing -Color Melting -Glossing/Toning -All over Color -Detangling -Conditioning treatments What's unique about the WOW Comb? It allows you to distribute product easily and evenly without wasting your product and also without dragging color with it. You never have to worry when combing dark colors into light ... The colored insert prevents your products from gathering in the teeth, because the insert rotates to make sure that the color is distributed evenly throughout the hair!