A specialized nit comb is an important tool when nit-picking. A regular hair comb will not remove head lice and nits. The best nit combs have closely spaced, metal teeth that are about 1–1/2 inches long (i.e., Acu-Med® lice comb, Hair Clean® 1-2-3 nit comb, LiceMeister® nit comb).
A variety of nit combs are packaged with head-lice products, and others are sold separately (available at some pharmacies). However, many of these are ineffective. Plastic combs are not useful because they are so flexible that the teeth separate, and nits and head lice are bypassed as the comb is dragged through the hair. With a short-toothed comb, it is difficult to completely comb through most types of hair.
Fig.1. Lice Comb