How can lice be removed using shampoo? - briefly
Apply a lice‑killing shampoo containing permethrin or pyrethrin to fully wet hair, leave it on for the recommended time, rinse, and comb the hair with a fine‑toothed nit comb to eliminate live insects and eggs. Repeat the process after seven days to eradicate newly hatched lice.
How can lice be removed using shampoo? - in detail
Effective removal of head‑lice with a medicated shampoo requires precise preparation, correct application, and thorough follow‑up.
Choose a shampoo that contains an approved pediculicide such as permethrin (1 %), pyrethrin, or dimethicone. Verify that the product is labeled for lice treatment and read the concentration and safety instructions.
Before treatment, separate the hair from clothing and jewelry to prevent contamination. Wet the scalp completely; excess water can dilute the active ingredient. Apply the shampoo liberally, ensuring the lather reaches the hair shaft and the skin of the scalp. Massage gently for the time specified on the label—typically 5–10 minutes—to allow the chemical to act on the insects and their eggs.
Rinse thoroughly with warm water, avoiding the use of conditioner or additional hair products that could interfere with the residual effect. While the hair is still damp, use a fine‑toothed lice comb (0.2 mm spacing) to remove dead nits and any surviving lice. Work from the scalp outward, cleaning the comb after each pass.
Repeat the entire process after 7–10 days, as newly hatched lice may emerge from eggs that survived the first application.
To reduce the risk of reinfestation, wash all bedding, towels, and clothing used within 48 hours in hot water (≥ 60 °C) and dry on high heat. Vacuum upholstered furniture and car seats, and store personal items such as hats and hair accessories in sealed bags for at least two weeks.
Consistent adherence to these steps maximizes the likelihood of complete eradication and prevents recurrence.