How to use peroxide for lice? - briefly
Apply a 3% hydrogen peroxide solution directly to the scalp and hair, saturating the infested area, let it sit for 5–10 minutes, then rinse thoroughly with warm water; repeat the treatment after 24 hours to target newly hatched nits. Use a fine-toothed comb after each application to remove dead lice and eggs.
How to use peroxide for lice? - in detail
Hydrogen peroxide can serve as a chemical agent to kill head‑lice eggs (nits) and adult insects when applied correctly. The solution must be diluted to a safe concentration, typically 3 % (the standard pharmacy grade). Higher strengths increase the risk of scalp irritation and chemical burns.
Preparation
- Verify the peroxide concentration; if the bottle exceeds 3 %, dilute with equal parts water.
- Perform a patch test: apply a small amount to a discreet area of scalp, wait 10 minutes, and observe for redness or burning. Discontinue if irritation occurs.
- Gather a fine-toothed nit comb, disposable gloves, a clean towel, and a plastic bowl for the solution.
Application procedure
- Separate hair into sections to expose the scalp fully.
- Saturate each section with the diluted peroxide, ensuring the liquid reaches the base of each hair shaft where nits attach.
- Allow the solution to remain for 5–7 minutes; this duration penetrates the egg shell without excessive exposure to the skin.
- Rinse the hair thoroughly with lukewarm water to remove residual peroxide.
- While hair is still damp, run the nit comb from scalp to tip, removing dead insects and empty shells after each pass.
- Repeat the combing process for all sections, cleaning the comb with hot, soapy water between passes.
Post‑treatment care
- Wash the scalp with a mild shampoo the next day to eliminate any remaining residue.
- Re‑inspect the hair after 48 hours; a second application of peroxide may be necessary if live lice are observed.
- Maintain a clean environment: wash bedding, hats, and hair accessories in hot water (≥60 °C) and vacuum carpets and upholstered furniture.
Safety considerations
- Do not use peroxide on broken or inflamed scalp skin.
- Avoid prolonged exposure; exceeding 10 minutes increases the chance of chemical irritation.
- Children under two years of age should not receive peroxide treatment without medical supervision.
- If severe itching, swelling, or rash develops, discontinue use and seek professional medical advice.