Antilice does not contain any neurotoxic chemicals. Antilice Spray has a unique dual action dimeticone allowing it to penetrate deeply into the tiniest parts of the lice, larvae and also the egg’s brething system, replacing the air. Usage: Shoul be applied to dry hair, depending on the lenght and fullness of the hair spray the necessary amount of Anti Lice Spray to the roots of the hair and distribute it steadily massaging on the persons head and wait for 15 minutes. Then comb your hair by using speacial comb and wash your hair by using Anti Lice Shampoo. In any event check the results after 8-10 days and repeat that application if necessary.