How should you correctly treat lice with a spray? - briefly
Apply the lice‑killing spray evenly to the scalp and hair, following the product’s instructions for contact time before rinsing. Repeat the application after 7–10 days to eradicate any newly hatched nits.
How should you correctly treat lice with a spray? - in detail
Treat a head‑lice problem with a spray by following a systematic protocol. Choose a product that contains an FDA‑approved active ingredient such as permethrin (1 %), pyrethrin, or dimethicone. Verify that the formulation is labeled for use on the scalp and hair, and read the concentration and age restrictions before purchase.
First, wash the hair with a regular shampoo to remove excess oil and debris. Rinse thoroughly and towel‑dry until damp but not wet. Apply the spray evenly, covering the entire scalp, all hair shafts, and the areas behind the ears and at the nape. Use the nozzle to direct the mist close to the scalp, ensuring full saturation. Follow the manufacturer’s timing instructions—typically leave the product on for 10‑15 minutes, then rinse with lukewarm water.
After rinsing, use a fine‑toothed nit comb to remove live lice and nits. Comb the hair in sections, starting at the scalp and moving toward the tips. Wipe the comb after each pass to avoid re‑contamination. Repeat the combing process for at least 10 minutes per session.
A second application is required to eliminate any newly hatched lice. Perform the repeat treatment 7‑10 days after the initial spray, using the same steps. If live lice are still detected after the second round, a third application may be necessary, adhering to the product’s safety guidelines.
Environmental control reduces reinfestation risk. Wash bedding, hats, scarves, and hair accessories in hot water (≥ 60 °C) and dry on high heat. Items that cannot be laundered should be sealed in a plastic bag for two weeks. Vacuum carpets and upholstered furniture to remove stray nits.
Monitor the situation for three weeks. If live insects persist despite correct usage, consult a healthcare professional for alternative therapies such as oral ivermectin or a prescription‑strength topical.