In fact, it is best to not shampoo again for 2 days, in order to give the medicine time to work. The medicine will kill the live lice bugs, generally within 12 hours. Comb your child's hair. This is the MOST important step!
Many lice medicines recommend a second treatment in 9 to 10 days. This will kill any new nymphs that have hatched since the first treatment. Do not treat a person more than 2 times with the same medicine without talking to your doctor. Do not use conditioner for 10 days after any treatment.
A second treatment is recommended 9 to 10 days after the first treatment to kill any newly hatched lice before they can produce new eggs.
The drug, lindane, is safe when used as directed, the FDA said. But problems can arise when zealous parents pour too much on a child's head or reuse it because the child still itches after a first application, the agency said.
The shampoo, cream rinse, or spray kills the live lice on the head but may not kill the nits. While the nits don't need to be removed from the hair, some people use a comb to remove nits after using lice treatment because they don't like the look of nits in the hair.
Environmentally relevant levels of pyrethroids—the class of pesticide that includes Permethrin—are also common in some household insecticide products. This means that adding lice shampoo, even the amount directed, to the level of pyrethroids already in a home can overexpose children to the pesticide.
Either washing done with a water temperature of at least 50 degrees C or drying is necessary to kill head lice and nits.
Place the patient in Contact Isolation until 24 hours after initial treatment. 2. A gown and gloves are required.
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.
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.
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.
If you have live lice in your hair, then that's easy to transmit to others. If you don't and you just have the nits or the eggs, it's okay to be around others. So it's not going to pass on. You can go back to school, you can go back to work.
In particular, you should change and wash the bedding every single day until your house is free from lice. If even just a few nits remain alive, a re-infestation can occur. Head lice can be stubborn. Even though they don't fly, it's easy for them to transfer from one person to another.
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.
Bottom line: Unless severely lice-infested clothes pass through the washer within the last 24 hours AND you let your clothes dry naturally after washing them on cold, AND you promptly wear those clothes, it's basically impossible to catch lice through communal laundry equipment.
Adult lice can't live longer than 24 hours or so on nonhuman surfaces like carpets, hardwood floors, clothing, furniture, sports helmets, headphones, or hair accessories. However, if you have identified lice in your home, isolate and wash those items and areas within at least 72 hours.
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.
But unfortunately, the nits will not simply fall out your hair. The lice themselves take 7 to 11 days to hatch, so after that what is attached to the hair is the empty eggshell or the dead nit. These will stay attached to the hair and as the hair grows you will find them further and further down the hair shaft.
After treatment, your skin may still itch for a week or more. This is because of your body's reaction to the lice.
After beginning treatment, continue combing at least once a day while you still see live lice. Then continue to comb your child's hair every three to four days for at least three weeks after you see your last live louse. This is because nits can take up to two weeks to hatch.
If a head lice treatment that you can buy without a prescription fails to work, the CDC recommends that you see a health care provider. Highly effective prescription treatments that you apply to the scalp are available.
There are over-the-counter (OTC) lice treatments that are effective at getting rid of lice, including Rid and Nix. If lice return, a doctor may prescribe the shampoo Lindane, (which the American Academy of Pediatrics warns against using as a first treatment in children), or lotions such as Sklice, Ulesfia, or Ovide.
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.
If you haven't told anyone that your child was recently treated for lice, you need to do so because it is likely that other children may have live lice hatching and the spread may continue if those children aren't treated too.