Derbac M - Head lice and pubic lice are parasites that can be easily treated with Derbac M Liquid. The active ingredient in this product is malathion, an organophosphorus insecticide used to kill mites and lice. To treat head lice apply the liquid on the scalp and massage the liquid from roots to tip so that it gets moistened with the liquid. Visit here https://www.pearlchemistgroup.co.uk/derbac-liquid-derbac-m-150ml.html