Hedrin All in One Shampoo 100ml – Kills Head Lice Removes Eggs & Cleans Hair Hedrin All in One Shampoo is a head lice treatment that combines all aspects of treating head lice into one simple to use the product. This shampoo treatment contains ingredients that help to kill lice and make removing eggs much easier. There is no nasty odour to this shampoo, and it does not contain any pesticides, which the lice could become immune to. This product includes the shampoo as well as a comb. Head lice cannot fly, so they transfer from person-to-person by direct contact. Children are the most likely to spend time in close contact with others, which is why they are the most likely to have head lice. Besides direct contact, head lice can also spread due to a number of different items.