After a long and agonizing battle with nits and head lice brought in by my daughter to my waist length hair, I finally won the war! Using several techniques, notably coconut oil smothering overnight, blowing the hair dry for lengthy periods, using a flattening iron and this comb in the shower with tons of conditioner I finally walked in to be checked at the local Rapunzel's lice salon and they told me I was completely nits free.My husband had shaved his head, my daughter literally shaved her head and is lucky enough to be able to pull the look off, but I was at my wit's end thinking I was never going to get rid of these things despite all the laundering cleaning Etc in addition to everything I was doing to my hair. This comb really does work, I do suggest watching some YouTube videos on how to properly comb it out. If this is something that you have to do yourself, I would do it as I did, in the shower and using tons of inexpensive conditioner. I sectioned my hair off and combed it, rinsed the comb, combed it from another Direction, rinsed, I used the water to help run the comb down while making sure to have my hair at the bottom of the comb to get the nits off.If you want to save yourself a bunch of time and hassle and you have the money, I suggest just going into a salon that specializes in treating it. But I just couldn't do that and tons of olive, coconut, mint, neem and other oils combined with all the above measures worked over a 2 and a half week time frame. This comb was the linchpin of all of this and I couldn't recommend it more! Good luck!