How long should kerosene be left on when treating lice? - briefly
Kerosene should be applied for no longer than 30 minutes before thorough washing; extending the exposure increases the risk of skin irritation and toxicity. After removal, rinse the scalp with warm water and a mild cleanser to eliminate residues.
How long should kerosene be left on when treating lice? - in detail
Kerosene is sometimes employed as a home remedy for head‑lice infestations, but its use demands precise timing and strict safety measures. The recommended exposure period is short: apply the liquid, leave it on the scalp for no more than five minutes, then rinse thoroughly with warm water and a mild shampoo. Extending the contact time beyond this interval increases the risk of skin irritation, chemical burns, and respiratory distress, especially in children.
Procedure
- Mix a few drops of kerosene with a carrier oil (e.g., olive or coconut oil) to reduce direct skin contact.
- Part the hair into sections, applying the blend to the roots and ensuring coverage of the entire scalp.
- Wait a maximum of five minutes; set a timer to avoid accidental overexposure.
- Rinse with warm water, massaging the scalp to dislodge nits and lice.
- Follow with a regular combing session using a fine‑toothed lice comb to remove remaining organisms.
- Wash all clothing, bedding, and towels used during treatment to prevent re‑infestation.
Precautions
- Perform a patch test on a small skin area 24 hours before full application to detect allergic reactions.
- Keep the child seated upright; do not allow the liquid to drip onto the face or eyes.
- Do not use kerosene on infants, pregnant women, or individuals with compromised skin integrity.
- Ensure the area is well‑ventilated to limit inhalation of fumes.
- Store kerosene out of reach of children after use.
Risks of prolonged exposure
- Dermatitis, erythema, and chemical burns appear after 10 minutes or more.
- Inhalation of volatile compounds can cause coughing, wheezing, or nausea.
- Systemic toxicity is possible if large quantities are absorbed through the skin.
Alternative treatments
- Over‑the‑counter pediculicides containing permethrin or pyrethrin, applied according to label instructions.
- Silicone‑based lotions that suffocate lice without toxic chemicals.
- Manual removal with a fine comb, repeated over several days.
In summary, when kerosene is chosen as a lice‑control agent, the contact period must not exceed five minutes, followed by immediate washing and thorough combing. Strict adherence to safety protocols is essential to avoid adverse health effects.