The waterproof Wave Sonic Brush treats your scalp to a rejuvenating massage — right in the shower! Specially contoured to fit your hand and caress your head, it features 33 massaging rubber fingers that glide through wet hair while relaxing the mind and body. Use it while lathering… or just after a shower for a uniquely rejuvenating experience. Features a “drop-proof” rubber grip and one-button operation.