Hedrin15 is a fast acting, easy to use head lice treatment that helps to kill head lice and eggs in minutes. Hedrin15 is formulated with Dimethicone. It works by physically smothering the lice while the Penetrol helps the product to penetrate louse eggs in order to kill them. Hedrin15 is not absorbed by the skin so it is suitable for use by everyone in the family from the age of 6 months upwards. This also makes it suitable for use by those with sensitive skin. Fast acting with such a short treatment time. Easy to use - Applyand leave 15 minutes then wash with no combing required. There is no odour and suitable for sensitive skin.