How can lice be removed in one treatment? - briefly
Apply a 1 % permethrin lotion or a dimethicone‑based product, leave it on for the recommended duration, then remove all nits with a fine‑tooth nit comb. Perform a repeat combing 7–10 days later to eliminate any newly hatched lice, ensuring complete eradication.
How can lice be removed in one treatment? - in detail
Effective eradication of head‑lice in a single application requires a combination of precise chemical action, thorough mechanical removal, and strict post‑treatment protocols.
The active ingredient must penetrate the insect exoskeleton and reach the nervous system within minutes. Permethrin 1 % or dimethicone 4 % formulations provide rapid immobilisation; dimethicone acts by coating the louse, causing desiccation without resistance development. Application must cover the entire scalp and hair shaft, ensuring saturation of all strands down to the scalp.
Following chemical exposure, a fine‑toothed nit comb should be used while the product remains wet. Comb the hair in sections, from scalp to tip, repeating the process at least three times per section. This mechanical step removes dead insects and nits that survived the initial contact.
Afterward, wash the hair with a mild shampoo to eliminate residual product, then rinse thoroughly. Dry the scalp completely; moisture promotes re‑infestation.
A strict no‑contact period of 24 hours is essential. During this time, avoid sharing hats, hairbrushes, bedding, or personal items. Launder all worn clothing and linens in hot water (≥ 60 °C) and dry on high heat.
If any live lice are detected after the 24‑hour interval, repeat the entire procedure once more; a second identical treatment resolves most residual infestations.
Key steps summarised:
- Apply a dimethicone‑based or permethrin‑based product, ensuring full coverage.
- Comb hair with a nit comb while the product is still wet, performing multiple passes.
- Rinse, dry, and enforce a 24‑hour isolation of personal items.
- Launder contaminated fabrics at ≥ 60 °C.
- Perform a single repeat treatment if necessary.
Following this protocol maximises the probability of complete elimination in one therapeutic cycle.