How should kerosene be correctly diluted for lice? - briefly
Mix kerosene with water at a ratio of 1 part kerosene to 9 parts water, adding a few drops of mild detergent to emulsify. Apply the solution to infested areas, let it act for 10–15 minutes, then rinse thoroughly with warm water.
How should kerosene be correctly diluted for lice? - in detail
Kerosene must be mixed with a non‑flammable carrier to achieve a concentration that kills lice without causing skin irritation. A commonly recommended ratio is one part kerosene to nine parts water‑based oil, such as mineral oil or a mild silicone‑based lotion. The mixture should be prepared in a glass or stainless‑steel container with a tight‑fitting lid; plastic vessels may react with the solvent.
The preparation steps are:
- Measure 10 ml of kerosene using a calibrated syringe.
- Add 90 ml of the chosen carrier liquid.
- Secure the lid and shake vigorously for 30 seconds until a uniform emulsion forms.
- Allow the solution to stand for 5 minutes; any separation indicates improper mixing and requires repetition of step 3.
Application guidelines:
- Apply the diluted solution to dry hair, ensuring complete coverage from scalp to tips. Use a fine‑toothed comb to distribute the mixture evenly.
- Leave the preparation on the scalp for 15–20 minutes. Do not exceed 30 minutes to avoid excessive absorption through the skin.
- Rinse thoroughly with lukewarm water and a mild shampoo. Remove residual oil with a second wash if necessary.
Safety precautions:
- Perform a patch test on a small area of skin 24 hours before full application. Observe for redness, itching, or swelling; discontinue use if any reaction occurs.
- Conduct the treatment in a well‑ventilated area to reduce inhalation of vapors.
- Keep the mixture away from open flames, sparks, or hot surfaces. Store the prepared solution in a labeled, sealed container for no longer than 24 hours; discard any remaining product after use.
- Wear disposable gloves during preparation and application to protect hands from direct contact.
Disposal instructions:
- Pour unused mixture into a container of absorbent material, such as cat litter, then seal and dispose of according to local hazardous‑waste regulations.
- Clean all equipment with soap and water, followed by a rinse with an alcohol‑based sanitizer to remove residual kerosene.
Following these precise steps ensures effective lice eradication while minimizing health risks associated with kerosene exposure.