Apply Natural look Pyrethrum Leave-In Conditioner following the cleansing of your hair with Pyrethrum Shampoo.Spray thoroughly into the hair and use a fine tooth comb – starting from the back of the head – and take your time to ensure the removal of all nits (eggs).Pyrethrum Leave-In Conditioner can be sprayed onto dry hair daily and used by all the family to prevent further re-infestation.