Hedrin All in One Shampoo 100mlNow treating head lice can be as fuss free as a hair wash. Just use Hedrin All in One Shampoo during your normal bath time routine. Hedrin Shampoo has been shown to kill lice in ten minutes. What's more, it makes louse egg (nit) removal easy; it's more than twice as effective as combing alone, and it leaves hair clean and fresh. A further check should be carried out one week after application to make sure that no lice or eggs have managed to escape