well i have had it 3 or 4 times in my life and the only solution i have found was using the shampoo and then also washing all clothes bedding, caots sweters etc in VERY HOT water. use degergent aswell. also make sure that you comb all of the nits out and then check her head again in two weeks just to be sure you got it all out. also for kids i have found that the strawberry scent is not good lol. they hate the smell.