This Mr. Happy Head Lice Comb helps remove lice, nits, and eggs from the scalp: a must-have tool for any head lice issue. Its stainless steel teeth are designed to efficiently and effectively comb through the scalp, with teeth that are spaced to catch even the smallest of lice and eggs. Using this comb helps to reduce the population of lice on the scalp to 99% in just one combing session.