Prior to combing you will need to make sure that you have good lighting and some kind of tissue to wipe the comb clean (a roll of toilet paper is efficient and cost effective). Comb may be used on wet or dry hair, although dry hair is better for removing eggs and their shells. Make sure the child’s hair is knot free, if this is an issue spray on some Neem Treatment / Leave-In Conditioner it’s also fabulous at removing tangles. Section the hair off and comb through one portion at a time, starting close to the scalp and following all the way to the end of the hair strands. After every comb wipe clean on a piece of paper. This allows you to see if anything is in fact present and removes any lice from the comb before going back to the head for more, use the cover brush for lice that aren’t easily removed from the comb teeth. Use the magnifying glass in the comb cover for ascertaining if your child has lice, eggs or dandruff. FYI dead or empty eggs turn white and can remain in the hair for some time if not removed; this is best achieved by combing dry hair.