Have you looked for Lyclear brand products at your pharmacy? They make a creme which has an insecticide, and a spray which doesn't, both are said to quickly kill lice. Which one did you buy, was it a wash, you said it dried out your daughters hair, I am sorry it must be harsh. You should maybe get a comb to clear the hair and use a tissue to wipe the comb clean, i hear lice do not jump or fly, but if they have an exoskeleton then it may be hard to kill them on the tissue. I am upset to hear about this, you must be exhausted, the washing and the treating, plus you now need to be aware of your daughter. I really hope you find a good method and get rid of them soon. Please keep us posted.