Medical aid Regular combing is very important in the fight against lice, both for checking the presence of lice and for removing lice and nits. A plastic lice comb is required for the check. The removal of lice and nits should be done with a metal comb, the so-called nit comb. Prioderm combines the lice and nit comb in one comb. Easily check for lice with one comb and immediately remove any found lice and nits.