ActionCup Brush Head: Hugs each tooth and helps hold toothpaste for effective surface stain removal; Rotating PowerHead: Loosens and whisks away plaque from surfaces, gum line and back teeth; Rubberized bristles: Help gently polish away stains; Blue cleaning bristles: Break up plaque and reach between teeth; Dual-cleaning action: Provides twice the cleaning action in one brush; Naturally whitens teeth by gently removing surface stains*; Effectively removes plaque; Action Cup Brush Head hugs each tooth and helps hold toothpaste for effective surface stain removal.