How to destroy lice nits? - briefly
Remove eggs by combing damp hair with a fine‑toothed nit comb after applying an approved pediculicide, then wash or heat‑treat all clothing and bedding at ≥130 °F (or seal items in a plastic bag for two weeks). Repeat the treatment after 7–10 days to eliminate any newly hatched lice.
How to destroy lice nits? - in detail
Lice eggs, commonly called nits, attach firmly to hair shafts with a cement-like substance. Effective eradication requires a combination of chemical, mechanical, and environmental measures.
First, select an appropriate treatment:
- Pediculicide shampoos or lotions containing 1% permethrin, 0.5% malathion, or dimethicone. Apply according to label instructions, ensuring thorough coverage of scalp and hair. Leave the product on for the recommended duration before rinsing.
- Prescription oral agents such as ivermectin for resistant infestations. Use only under medical supervision.
Second, mechanically remove residual eggs:
- After the chemical step, use a fine-toothed nit comb (approximately 0.15 mm spacing). Start at the scalp, comb through each section of hair from root to tip.
- Rinse the comb frequently in a bowl of hot, soapy water to prevent re‑attachment.
- Repeat the combing process at least twice, spaced 7–10 days apart, to capture any eggs that survived the initial treatment.
Third, decontaminate personal items and environment:
- Wash clothing, bedding, and towels used within the previous 48 hours in hot water (≥60 °C) and dry on high heat for at least 30 minutes.
- Seal non‑washable items (e.g., hats, hair accessories) in a sealed plastic bag for two weeks to starve any remaining lice.
- Vacuum carpets, upholstered furniture, and vehicle seats; discard the vacuum bag or clean the canister afterward.
Fourth, monitor for reinfestation:
- Inspect the scalp and hair daily for the next three weeks. Look for live lice or newly hatched nits within 1 mm of the scalp.
- If any are found, repeat the chemical treatment and combing cycle immediately.
Finally, educate all household members about avoiding head-to-head contact and sharing personal items, which are primary transmission routes. Consistent application of the above protocol typically eliminates the infestation within two to three treatment cycles.