Nix out lice. From the Number One pediatrician-recommended lice removal brand (1), this maximum-strength Nix Creme Rinse will kill head lice and eggs (nits) in one application. First, apply Nix Creme Rinse to head hair to kill lice and eggs (nits) and to prevent reinfestation for up to 14 days after the initial application. Next, remove lice and eggs (nits) from head hair with the Nix Nit Comb. Nix Creme Rinse is for use on head hair and is safe for use on children 2 months and older. Nix is trusted by moms and feared by lice. See the package insert for full instructions and read entire label before each use. Spanish instructions included. (1) Pediatrician survey data on file.