KP24 Rapid Lice Treatment 150mlKP24 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.