An ergonomically designed vibrating massager. This waterproof brush fits easily in the hand (it is 9 X 6 cm) and has a simple button to press on top to activate it. It has about 60 rubber nodules slightly over 1 cm long to provide a pleasant, tingling sensation when applied to the scalp. Safe for kids to use in the bath - a fun to encourage them to be more thorough to wash all their hair. It can also be quite useful for people with itchy scalps using anti-dandruff shampoos, which direct that it be kneaded into the entire scalp area for a few minutes.