Now, 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 All in One 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. Hedrin All in One Shampoo is pesticide-free, so you can use it whenever you need to. It\'s complete headlice treatment, without the drama.