KP24 Rapid is different to traditional head lice treatments as it has a physical action towards the lice. It kills the head lice by dehydrating them rapidly and suffocating them. A metal comb is included to physically remove the lice from the scalp. KP24 Rapid also contains tea tree and eucalyptus oil which have a repellent effect on head lice. After treatment, it leaves the hair soft and shiny.The KP24 Rapid Family Pack contains up to 3 treatments and is suitable for use on any child over the age of two with a head lice problem. KP24 Rapid is not advised for pregnant women.KP24 Rapid should be applied at the first sign of a head lice infestation. This solution is used to treat and prevent head lice infestations.