What to use to cure lice and nits? - briefly
Use a 1 % permethrin or 0.5 % pyrethrin pediculicide shampoo or lotion, applied as directed, then repeat the treatment after 7–10 days. Follow each application with a fine‑toothed nit comb to physically remove remaining eggs.
What to use to cure lice and nits? - in detail
Effective treatment of head lice and their eggs requires a combination of chemical agents, physical removal techniques, and preventive measures.
First‑line chemical options include over‑the‑counter (OTC) insecticidal shampoos and lotions containing permethrin (1 %) or pyrethrin combined with piperonyl butoxide. Apply to dry hair, saturate scalp, leave for the recommended 10 minutes, then rinse. A second application 7–10 days later eliminates newly hatched nymphs before they mature.
Prescription products, reserved for resistant infestations, feature higher concentrations or alternative active ingredients:
- Benzyl alcohol 5 % lotion – kills lice within 10 minutes; repeat after 7 days.
- Malathion 0.5 % lotion – requires 8–12 hours of contact; repeat after 7 days.
- Ivermectin 0.5 % cream – single application, no repeat needed for most cases.
- Spinosad 0.9 % suspension – 10‑minute exposure; repeat after 7 days if live lice remain.
Non‑chemical methods complement pharmacologic treatment.
- Fine‑toothed nit combs, used on wet, conditioned hair, remove most eggs in 4–6 passes per section; repeat every 2–3 days for two weeks.
- Silicone‑based sprays (e.g., dimethicone) coat lice, causing suffocation; apply to dry hair, leave 10 minutes, then comb out nits.
Adjunctive steps reduce reinfestation risk:
- Wash bedding, clothing, and hats in hot water (≥ 130 °F/54 °C) or seal in plastic bags for 2 weeks.
- Vacuum carpets and upholstered furniture.
- Avoid sharing personal items such as combs, hats, or headphones.
Safety considerations:
- Permethrin and pyrethrin are contraindicated for children under 2 months; benzyl alcohol is not for infants under 6 months.
- Pregnant or lactating individuals should consult a healthcare professional before using prescription agents.
A systematic approach—initial chemical treatment, thorough nit removal, a repeat dose, and environmental decontamination—provides the highest likelihood of eradication. Continuous monitoring for live lice over a 14‑day period confirms success.