Dip the Licenders Lice Comb into the Combing Solution and comb through small sections of hair. Dip the comb into the activating powder. Comb through a small section of hair starting at the scalp to the end of the hair. Comb from underneath as well as from above. Wipe the comb off on a wet paper towel after each combing. Go through the hair repeating the same process in each of the separated sections until all the nits are out. You must take your time. Combing should take about two hours for a girl with shoulder length hair and one hour for a boy with short hair. Help is always available at our Lice Treatment Center.