LiceLogic Clear & Free Shampoo is the leading non-toxic lice shampoo proven to kill lice and nits on contact. This proprietary natural enzyme-based lice shampoo destroys head lice and nits on contact. Gentle on the hair and scalp, this lice treatment shampoo can be used as often as needed (even daily) to get rid of  lice infestation the safe and natural way. (Shampoo is concentrated - a little goes a long way). 8 oz bottle.