Hedrin 4% Lotion Spray 120ml is a new way to eradicate head lice in adults and children aged 6 months and over. Instead of using an insecticide to poison the head lice, Hedrin uses Dimeticone to kill them with a non-chemical action. Hedrin can be used again and again because, unlike pesticide treatments, Hedrin’s mode of action means that lice do not develop resistance to it. And because Hedrin is not absorbed by the skin it is suitable for use by everyone in the family from the age of 6 months upwards.