Nix Permethrin Lice Treatment is pediatrician recommended and kills lice and their eggs with a single application. Nix is safe for use on children over 2 months of age and prevents reinfestation for 14 days. Nix Lice Treatment contains 1 bottle of creme rinse and 1 nit removal comb. Nix can be used to treat head lice, as well as body lice such as crabs. Nix is easy to use and comes with detailed instructions. ShopInPrivate.com offers this lice and crab spray and other embarrassing products in a discreet, private, and secure shopping environment. Active Ingredients: Permethrin 1.0% (280mg per one fluid ounce of Nix).