Head Lice - Treatments

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What is the treatment for a head lice infestation (pediculosis)?

For effective elimination of head lice, the infested individual, family members that are also infested, and the home must all be treated.

Treatment of the individual and the infected family members

Over-the-counter (OTC) or prescription medications are used to treat the affected people and their families. Follow these treatment steps:

  1. Remove all clothing.
  2. Apply lice medicine, also called pediculicide, according to the label instructions. If your child has extra-long hair, you may need to use a second bottle. WARNING: Do not use a cream rinse or combination shampoo/conditioner before using lice medicine. Do not rewash hair for one to two days after treatment.
  3. Have the infested person put on clean clothing after treatment.
  4. If some live lice are still found eight to 12 hours after treatment but are moving more slowly than before, do not retreat. Comb dead and remaining live lice out of the hair. The medicine sometimes takes longer to kill the lice.
  5. If, eight to 12 hours after treatment, no dead lice are found and lice seem as active as before, the medicine may not be working. See your health care professional for a different medication and follow their treatment instructions.
  6. Nit (head lice egg) combs, often found in lice medicine packages should be used to remove nits and lice from the hair shaft. Many flea combs made for cats and dogs are also effective.
  7. After the initial treatment, check, comb, and remove nits and lice from hair every two to three days.
  8. Retreat in seven to 10 days.
  9. Check all treated people for two to three weeks until you are sure all lice and nits are gone.

Treating the house:

Treating the whole house is a laborious but important task. Follow these steps:

  1. Machine wash all washable clothing and bed linens that the infested person touched during the two days before treatment (to kill the lice and nits). Use the hot water cycle (130 F; 55 C) to wash clothes. Dry laundry using the hot cycle for at least 20 minutes.
  2. Dry clean clothing that is not washable (coats, hats, scarves, etc.), or store all clothing, stuffed animals, comforters, etc., that cannot be washed or dry cleaned into a plastic bag and seal it for two weeks.
  3. Soak combs and brushes for one hour in rubbing alcohol, Lysol, or wash with soap and hot (130 F; 55 C) water and then place in bag and leave in freezer for two days.
  4. Vacuum the floor and furniture. Do not use fumigant sprays. (They can be toxic if inhaled.)
Return to Head Lice

See what others are saying

Comment from: Allyz, 35-44 Female (Patient) Published: August 31

Keratin hair straightening treatment in salon kills lice. Expensive but worth it!!! I hate lice!! I have lice again from my daughter's friend who used my brush. If I wasn't nursing I would do keratin but you can't do it if you're pregnant or nursing.

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Comment from: steve, 7-12 Male (Caregiver) Published: November 14

When my girls came home from school with lice I could not afford the lice shampoo, so I bought dog shampoo, it kills the lice for a third of the cost.

Was this comment helpful?Yes

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