After 10 minutes, the medicine is rinsed off. Nix Creme Rinse® kills lice, but not the nits. It is the favored medicine because it may continue to kill newly hatched lice for a few days after treatment. A second treatment is needed on day 9 to kill newly hatched lice.
The medicine may take longer to kill all the lice. Comb dead and any remaining live lice out of the hair using a fine–toothed nit comb. If, after 8–12 hours of treatment, no dead lice are found and lice seem as active as before, the medicine may not be working.
Medicated lotions and sprays
Head lice should die within a day. Some lotions and sprays come with a comb to remove dead lice and eggs. Some treatments need to be repeated after a week to kill any newly hatched lice. Check the pack to see if they're OK for you or your child and how to use them.
Treatments for head lice are generally safe and effective when used correctly. Some treatments may cause an itching or a mild burning sensation caused by inflammation of the skin on the scalp. Most products used to treat head lice are pesticides that can be absorbed through the skin.
What makes someone contagious with head lice is having a mature, egg-laying adult female louse on your head that could travel to another head. After the first treatment, when the egg-laying lice are eliminated, you are no longer contagious.
If they are full then they will be plump and shiny. What does a dead lice egg look like? A dead lice egg will be white or grey. As they are empty, they will be flat and dry.
Can someone have nits but no lice? It may be possible to have nits but no lice. If a person cannot find any nymphs or adult lice in the scalp and the nits are more than a quarter of an inch from the scalp, these may be dead and from an old infestation.
After treatment, your skin may still itch for a week or more. This is because of your body's reaction to the lice. Follow-up care is a key part of your treatment and safety.
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.
Suffocate the Lice
Soak your child's head in olive oil or coconut oil. Cover with a shower cap for at least 2 hours (or preferably overnight). When ready, remove the shower cap, and separate the hair into small sections, then use a metal nit comb to carefully remove the lice and eggs. Rinse the hair well with shampoo.
It's essential to wash all bedding after a head lice treatment. The heat from a hot water cycle will ensure that no surviving lice can find a host again.
How many head lice are usually found on an infested person? 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.
However, it may take up to 4 to 6 weeks after lice get on the scalp before the scalp becomes sensitive to the lice saliva and begins to itch. Most of the itching happens behind the ears or at the back of the neck. Also, itching caused by head lice can last for weeks, even after the lice are gone.
Not everyone feels lice moving around on their scalp, but some people do. Dr. Garcia says that most of her patients say they “don't feel anything,” but others may get a creepy, tickling sensation as lice move around their head.
Children can have a few nits without actually having a case of head lice. Usually children have no more than 10 to 20 live lice. Good lighting is important when you are checking. Head lice move fast and are hard to see.
A viable egg (which will hatch) is brown (Figure 2) because there is a developing louse inside the egg. Once the egg hatches, the eggshell (still attached to the hairshaft) will be white, but at this time, there is no living louse inside the egg (Figure 3).
In most cases, a child who has lice should stay at school until the end of the day, go home and get treatment, and return to school the next day. While they are at school, kids should avoid head-to-head contact with other kids.
You shouldn't see any crawling head lice after the first treatment if you applied it correctly. If you are still seeing live crawlers, then you may have missed a step or the treatment is not effective against the type of lice your child has.
Dead nits are often black in colour and are found well away from the scalp. Nits are laid on the hair shaft within 1cm of the scalp and take about 7-10 days to hatch into head lice.
If nits are yellow, tan, or brown, it means the lice haven't hatched yet. If the nits are white or clear, the lice have hatched and just the egg remains. Lice eggs hatch within 1 to 2 weeks after they're laid.
Heat Method:
There are recent studies that show that treatment of lice with heat can be quite effective in killing head lice. Products such as Lousebuster are very effective but even a home hairdryer can successfully treat lice.
DO NOT over treat. Some louse shampoos can be neurotoxic and overuse can damage the nervous system. Wear gloves when treating more than one person with head louse shampoo. If more than two treatments are required to control an infestation, talk to the School Nurse(s) or the Health Department about alternative methods.