Hedrin Treat & Go is a fuss-free solution great for children who just want to get out and play and is suitable for adults and children 6 months plus. Hedrin Treat & Go is an easy, no-fuss way to get rid of head lice and their eggs. It is light, non-sticky and spreads quickly and easily on the hair and washes out easily too. It contains Activdiol 5% which is not a chemical poison. It works by a physical process which effectively disrupts the outer skin of the louse and causes it to dehydrate and die. Hedrin Treat & Go can be used as often as required without lice developing resistance. A leave in treatment to wash out later. Water-based treatment which rinses out of hair easily. Allergy Certified. Pesticide Free. Requires two applications (eight hours or overnight), seven days apart.