What should be done if an adult has lice in their hair? - briefly
Apply a licensed adult lice treatment (e.g., permethrin 1 % shampoo or dimethicone lotion) according to the label, then comb the hair with a fine‑tooth nit comb to remove nits. Wash clothing, bedding, and personal items in hot water or seal them for two weeks to prevent re‑infestation.
What should be done if an adult has lice in their hair? - in detail
An adult who discovers head‑lice infestation must act promptly to eliminate the parasites and prevent spread. The process consists of three phases: treatment, environmental decontamination, and follow‑up.
First, apply a proven pediculicide. Recommended options include 1 % permethrin lotion, 0.5 % malathion shampoo, or dimethicone‑based products. Follow the manufacturer’s instructions for application time, thorough coverage of the scalp and hair, and rinsing. After the initial treatment, wait 7–10 days and repeat the application to kill any newly hatched nymphs that survived the first dose.
Second, remove live insects and eggs manually. Use a fine‑toothed nit comb on wet, conditioned hair. Comb from scalp to tip in sections, cleaning the comb after each pass. Perform this combing at least once daily for a week. Inspect the hair under bright light to confirm the absence of live lice and viable nits.
Third, sanitize personal items and surroundings. Wash clothing, bedding, and towels used within the previous 48 hours in hot water (≥ 60 °C) and dry on high heat. Seal non‑washable items such as hats, hair accessories, or upholstered cushions in sealed plastic bags for two weeks, the typical lifespan of a louse. Vacuum carpets, upholstery, and car seats; discard the vacuum bag or clean the canister afterward.
Finally, monitor for recurrence. Examine the scalp and hair every 2–3 days for the next two weeks. If live lice reappear after the second treatment, repeat the pediculicide cycle and re‑comb. Persistent infestation despite two full treatment courses warrants consultation with a healthcare professional for alternative prescription medication.
By adhering to the outlined regimen—chemical treatment, meticulous combing, thorough sanitation, and vigilant follow‑up—an adult can eradicate head‑lice infestation efficiently and reduce the risk of reinfestation.