Hedrin Shampoo All in One 100ml with Lice Comb Now treating lice can be as hassle-free as washing your hair. Simply use Hedrin All in One Shampoo during your regular bathing routine . Hedrin Shampoo has been proven to kill lice in ten minutes . In addition, it facilitates the removal of lice eggs, is more than twice as effective as combing alone and leaves hair clean and fresh. Hedrin All in One shampoo is pesticide-free, so you can use it whenever you need it.