How to cure lice? - briefly
Apply an FDA‑approved pediculicide (such as permethrin 1% lotion) to the scalp, follow the label’s timing, then remove remaining nits with a fine‑toothed comb; repeat the treatment after 7–10 days and wash all bedding, clothing, and personal items in hot water.
How to cure lice? - in detail
Treating head‑lice infestations requires a systematic approach that combines chemical or physical agents, thorough cleaning of personal items, and follow‑up inspections.
First, select an appropriate pediculicide. Over‑the‑counter products containing 1% permethrin or 0.5% pyrethrin are effective against most strains. Apply the lotion or shampoo according to the manufacturer’s instructions, ensuring coverage of the scalp and hair to the roots. Leave the preparation on for the specified duration, then rinse thoroughly. For resistant cases, a prescription‑only agent such as 0.5% malathion or 0.05% ivermectin may be required; these should be used under medical supervision.
Second, remove nits mechanically. After chemical treatment, use a fine‑toothed lice comb on wet, conditioned hair. Comb from the scalp outward in 1‑inch sections, wiping the comb on a white towel after each pass to detect trapped eggs. Repeat the combing process at least twice, spaced 7–10 days apart, to capture any newly hatched nits.
Third, decontaminate personal items. Wash clothing, bedding, and towels used within the previous 48 hours in hot water (≥ 130 °F/54 °C) and dry on high heat. Items that cannot be laundered should be sealed in a plastic bag for two weeks or placed in a freezer at –4 °F (–20 °C) for at least 24 hours. Vacuum carpets and upholstered furniture to eliminate stray lice.
Fourth, monitor and repeat treatment. Inspect the scalp and hair every 2–3 days for live insects or viable nits. A second application of the chosen pediculicide is typically recommended 7–9 days after the initial treatment to break the life cycle. Continue observations for at least four weeks to confirm eradication.
Finally, educate all household members. Ensure that close contacts are examined and, if necessary, treated simultaneously to prevent re‑infestation. Emphasize avoidance of sharing combs, hats, or pillows during the treatment period.
By following these steps—chemical treatment, meticulous nit removal, environmental decontamination, scheduled re‑application, and comprehensive monitoring—head‑lice infestations can be eliminated efficiently and safely.