How to get rid of lice from a person? - briefly
Apply a lice‑killing shampoo or lotion (e.g., permethrin or pyrethrin), follow the label directions, and comb out all nits with a fine‑tooth nit comb, repeating the treatment after 7–10 days. Clean bedding, clothing, and personal items in hot water and dry on high heat to avoid re‑infestation.
How to get rid of lice from a person? - in detail
Eliminating head lice from an individual requires a systematic approach that combines direct treatment, thorough combing, and environmental sanitation.
First, confirm the infestation by inspecting the scalp and hair for live insects or viable nits attached within ¼ inch of the hair shaft. Use a magnifying glass and a fine-toothed lice comb under bright light.
Select an appropriate pediculicide. Over‑the‑counter options contain permethrin (1 %) or pyrethrin with piperonyl butoxide; they must be applied to dry hair, left for the recommended duration (usually 10 minutes), and then rinsed thoroughly. Prescription products such as malathion (0.5 %) or ivermectin lotion provide alternatives when resistance is suspected. Follow label instructions precisely; do not exceed the advised dosage.
After chemical treatment, remove residual nits with a fine-toothed comb. Work in sections, pulling the comb from the scalp outward, cleaning the teeth after each pass. Repeat combing at least every 2–3 days for two weeks to capture newly hatched lice.
Simultaneously, 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. Seal non‑washable items in a sealed plastic bag for two weeks. Vacuum carpets, upholstered furniture, and car seats; discard the vacuum bag or clean the canister afterward.
Consider adjunctive non‑chemical methods if chemical resistance is suspected or for individuals intolerant to insecticides. These include:
- Repeated wet‑combing with a fine-toothed comb and conditioner, performed daily for a week.
- Application of dimethicone‑based lotions that suffocate lice without neurotoxic action.
- Use of essential‑oil preparations (e.g., tea tree oil) only as adjuncts, not replacements for proven pediculicides.
Monitor the treated person for signs of treatment failure: persistent live lice after 7 days or reappearance of nits. If infestation persists, repeat the chemical treatment after the recommended interval (usually 7–10 days) or switch to an alternative active ingredient.
Finally, educate all household members on preventive measures: avoid sharing combs, hats, or headphones; keep hair tied back for children in close‑contact settings; conduct regular scalp checks during outbreaks. Consistent application of these steps breaks the life cycle of the parasite and prevents recurrence.