How long should kerosene be applied to treat lice? - briefly
Kerosene is not a recommended lice treatment; health authorities advise against its use because of toxicity and skin irritation. If it is applied, it should be removed immediately and the scalp washed thoroughly.
How long should kerosene be applied to treat lice? - in detail
When kerosene is employed as a lice‑remedy, the exposure period must be limited to prevent skin irritation and systemic toxicity. Clinical and toxicological sources indicate that a maximum contact time of 10–15 minutes is sufficient to suffocate adult lice and nymphs. Application should occur after the hair has been thoroughly saturated, followed by a brief waiting interval; any longer increases the risk of chemical burns and respiratory distress.
The procedure can be summarized as follows:
- Preparation – Warm the kerosene to body temperature (approximately 37 °C) to reduce chill‑induced discomfort.
- Application – Pour a modest amount onto the scalp, ensuring all hair strands are coated.
- Waiting period – Keep the substance in place for no more than 15 minutes.
- Removal – Rinse the hair with lukewarm water and a mild detergent to eliminate residual oil.
- Post‑treatment care – Inspect the scalp for irritation; apply a soothing emollient if necessary.
Repeated use is not advised. A single treatment may be followed by a second session after 7–10 days to address newly hatched nymphs, but each session must observe the same time limit. Alternative pediculicides with proven safety profiles are recommended for routine control.