Diagnosing head lice and nits A comb with flat-faced teeth and a tooth spacing of 0.2 to 0.3mm is best. Detection combing can be carried out on dry or wet hair. Dry combing takes less time, but wet combing is more accurate because washing with conditioner stops head lice from moving.
Fine tooth combing in dry hair is as good as wet combing to detect lice. The most reliable way to check is to wet comb because soaking wet lice stay still. In dry hair lice move quickly away from disturbance.
Lice and nits can be removed by wet combing. You should try this method first. You can buy a special fine-toothed comb (detection comb) online or from pharmacies to remove head lice and nits.
Treating head lice. With the hair wet and full of conditioner, it is difficult to see whether any lice or nits have been removed. However, dry combing, which is easier to do, allows success of louse removal to be seen and has been successful in ten out of ten separate infestations.
Sometimes it will be easier to remove the nits if you wet the hair with white vinegar while you are combing the nits out. Vinegar helps loosen the "glue" that holds the nits to the hair. Separate and comb small sections of hair at a time.
Eggs and nits also stick to the hair shaft, so they don't come off easily. If you try to pull one out of the hair with your fingers, it won't budge—it will move only if you use your nails to get behind it and force it off.
You'll be able to see moving lice and eggs. The eggs will be very hard to remove because they're attached to the hair with a substance that's like glue. Among the most common solutions are lotions and shampoos that contain a chemical called permethrin, or Nix.
To remove lice and nits by hand, use a fine-tooth comb on wet, conditioned hair every 3–4 days for 3 weeks after the last live louse was seen. Go through small sections of hair at a time. Wetting the hair temporarily stops the lice from moving, and the conditioner makes it easier to get a comb through the hair.
Ordinary conditioner removes head lice eggs as effectively as special products. Summary: Some shampoos and conditioners that contain chemicals or special oils are marketed as nit-removal products for head lice eggs. However, new research shows that ordinary hair conditioner is just as effective.
Wipe the comb clean on a piece of tissue between each stroke. Continue until you can't see any more lice or nits after combing. This will probably take at least half an hour. Repeat every three or four days for at least two weeks so you remove any hatching lice before they have the chance to lay new eggs.
The conditioner does not kill lice but stuns them for about 20 minutes enabling easier removal. The long toothed metal comb will remove nits and the stunned head lice. Wipe the comb on a white tissue and check for any lice or nits.
Washing, soaking, or drying items at a temperature greater than 130°F can kill both head lice and nits. Dry cleaning also kills head lice and nits.
It takes several treatments to completely remove lice and nits from your hair. It could take up to three weeks to get rid of all lice and nits.
Rinsing the hair with white vinegar before washing may help dissolve the glue that holds the nits to the hair shafts.
Use hairspray to stick it to head lice
Hairspray makes it harder for the louse to grab hold. The smell of hairspray and the use of solvents (sad but true) in them can also deter creepy crawlies from finding their way in. Not to mention that if you're tying longer hair back, you've got a double whammy.
Repeat treatment every day or every other day for 2 weeks. Some lice eggs (nits) survive head lice treatments. The only way to be sure that lice won't come back is to pick out all nits. Nits left on the hair can hatch and cause a new case of head lice.
Spinosad topical suspension, 0.9%, was approved by the FDA in 2011. Since it kills live lice as well as unhatched eggs, retreatment is usually not needed. Nit combing is not required. Spinosad topical suspension is approved for the treatment of children 6 months of age and older.
First, wash the hair with a regular shampoo. Then, towel dry it before using the anti-lice creme. Do not use a conditioner or creme rinse after shampooing. Reason: It will interfere with Nix.
Typically, 10–15 head lice are found. The number of lice often depends on personal hygiene, for example, how often the person bathes, shampoos, or changes and washes his/her clothing.
The only way to prevent them from hatching would be to remove them with a good metal nit comb, or your fingernails. Nits are laid by the mother and attached with a glue she formulates, to sit on the hair shaft in the perfect spot to incubate and hatch.
Nits take about 1 week to hatch (range 6 to 9 days). Viable eggs are usually located within 6 mm of the scalp. ) and become adults about 7 days after hatching.
After mating, the adult female louse can produce five to six eggs per day for 30 days (8), each in a shell (a nit) that is 'glued' to the hair shaft near the scalp (5,6). The eggs hatch nine to 10 days later into nymphs that molt several times over the next nine to 15 days to become adult head lice (5).
Lice lay nits on hair shafts close to the scalp, where the temperature is perfect for keeping warm until they hatch. Nits look a bit like dandruff, but aren't removed by brushing or shaking them off. Unless a child has many head lice, it's more common to see nits in the hair than live lice crawling on the scalp.
Only one live bug can be produced per nit or egg. After the egg is laid, it takes roughly seven to 10 days for it to hatch. Once the egg hatches, it takes another seven to 10 days to reach maturity and begin laying eggs of its own. An adult louse can lay up to six eggs per day and live for up to 30 days on a host.
Infestation timeline
An adult louse climbs onto your hair and lays about 6 to 10 nits a day, which take about 9 days to hatch. So if you look on the scalp and see no visible adult lice and several small nits, it's likely that you've caught lice in the earlier stages and had them for less than 2 weeks.