How should vinegar be diluted with water to fight lice? - briefly
A practical mixture uses one part distilled white vinegar combined with three parts water, applied to the scalp and left for 10–15 minutes before rinsing. This concentration balances efficacy against lice while minimizing irritation.
How should vinegar be diluted with water to fight lice? - in detail
Vinegar, when mixed with water, can create a solution that helps to loosen nits and discourage lice activity. The effectiveness of the mixture depends on the concentration, exposure time, and proper application technique.
A practical dilution ratio for scalp treatment is one part white distilled vinegar to one part water, producing a solution of approximately 5 % acetic acid. For a more aggressive approach, a ratio of two parts vinegar to one part water may be used, but the resulting acidity should not exceed 7 % to avoid irritation. Diluting beyond a 1:2 (vinegar:water) ratio reduces efficacy and provides little additional benefit.
Preparation steps:
- Measure the desired volume of vinegar and water according to the chosen ratio.
- Combine the liquids in a clean container, stirring gently to ensure uniform distribution.
- Transfer the solution to a spray bottle or a cup for direct application.
- Perform a brief skin test on a small area of the scalp; discontinue use if redness or burning occurs.
Application guidelines:
- Apply the solution generously to dry hair, ensuring full coverage of the scalp and strands.
- Allow the mixture to remain for 10–15 minutes; the acidity helps to detach nits from hair shafts.
- Rinse thoroughly with lukewarm water, then follow with a fine-toothed lice comb to remove loosened eggs.
- Repeat the process every 3–4 days for two weeks, aligning with the lice life cycle.
Safety considerations:
- Do not use undiluted vinegar on the scalp; it can cause chemical burns.
- Avoid contact with eyes; rinse immediately if exposure occurs.
- Children under six months should not be treated with any vinegar solution.
- Store any remaining mixture in a sealed container, labeling it clearly and discarding after 48 hours.
Post‑treatment measures:
- Wash bedding, clothing, and personal items in hot water (≥ 60 °C) to eliminate residual lice.
- Vacuum carpets and upholstered furniture to remove fallen nits.
- Maintain regular combing sessions for at least two weeks to confirm eradication.