How can one wash to get rid of lice? - briefly
Wash hair with a shampoo heated to at least 130 °F (54 °C), rinse thoroughly, then dry the scalp and hair on high heat for at least 30 minutes; repeat the process after 7–10 days to eliminate any newly hatched nits.
How can one wash to get rid of lice? - in detail
Washing the scalp and hair can be an effective component of a lice‑elimination protocol when performed correctly. The process requires specific products, precise timing, and thorough follow‑up.
Begin by selecting a medicated shampoo that contains an approved pediculicide, such as permethrin 1 % or pyrethrin. If a chemical option is not preferred, use a high‑temperature shampoo (at least 55 °C/130 °F) combined with a thorough rinse. Apply the shampoo to damp hair, massage into the scalp, and leave it on for the exact duration indicated on the label—typically 10 minutes. Do not exceed the recommended time, as prolonged exposure can cause scalp irritation.
After the prescribed interval, rinse with hot water that maintains the temperature above 55 °C. Hot water helps detach nits from hair shafts and kills any remaining lice that survived the chemical treatment. Follow with a cool‑water rinse to close the cuticles and reduce scalp discomfort.
While the hair remains wet, use a fine‑toothed nit comb. Start at the scalp and work outward, pulling each section through the comb to remove live insects and eggs. Perform this step for at least five minutes per wash, covering the entire head. Rinse the comb after each pass to prevent re‑contamination.
Repeat the washing and combing cycle after seven days. Lice eggs hatch within 7–10 days; a second treatment eliminates newly emerged nits that survived the first wash. Continue the second session for the same duration and temperature as the initial one.
In addition to personal hygiene, treat the environment:
- Wash all bedding, clothing, and towels used within the previous 48 hours in water ≥55 °C; tumble‑dry on high heat.
- Seal non‑washable items (e.g., hats, plush toys) in airtight bags for two weeks.
- Vacuum carpets, upholstery, and car seats; discard vacuum bags immediately.
Maintain a schedule of weekly washes for three consecutive weeks to ensure complete eradication. Document each session, noting product used, temperature, and combing time, to verify compliance and effectiveness.