How to treat the head with dichlorvos for lice? - briefly
Apply a 0.1% dichlorvos solution evenly to dry hair and scalp, covering all strands. Leave for 10–15 minutes, then rinse thoroughly with water.
How to treat the head with dichlorvos for lice? - in detail
Dichlorvos, an organophosphate compound, can be employed to eradicate pediculosis capitis when applied according to strict guidelines. The substance is typically supplied as a 2 % solution in a spray or lotion form; concentrations higher than 2 % increase the risk of neurotoxicity and are not recommended for scalp use.
Preparation
- Verify that the product is labeled for head‑lice treatment and that the expiration date is current.
- Conduct a skin‑sensitivity test on a small area of the neck; wait 15 minutes for any irritation.
- Remove hair conditioners, oils, and heavy styling products; wash hair with a mild shampoo and towel‑dry until damp but not wet.
Application
- Dispense the solution onto a clean applicator or directly onto the scalp, ensuring coverage of the entire hair length and the skin of the scalp.
- Massage gently to distribute the liquid evenly; avoid vigorous rubbing that could cause scalp abrasions.
- Allow the product to remain for the time specified on the label, usually 10 minutes. Do not exceed the recommended duration.
- Rinse thoroughly with lukewarm water; follow with a mild shampoo to remove residual chemical.
Post‑treatment actions
- Comb hair with a fine‑toothed lice comb while still damp; remove all visible nits and adult insects.
- Repeat the combing process at 7‑day intervals for three sessions to capture any newly hatched lice.
- Wash all clothing, bedding, and personal items that may have contacted the scalp in hot water (≥ 60 °C) or place them in a sealed plastic bag for two weeks.
Safety considerations
- Do not apply to broken skin, open wounds, or irritated scalp.
- Pregnant or nursing individuals should avoid use due to potential fetal exposure.
- Children under 2 years of age are contraindicated.
- Keep the product out of reach of children; store in a locked cabinet.
- In case of accidental ingestion or severe skin reaction, seek immediate medical attention; provide product label information to healthcare providers.
Regulatory status
- Many health agencies have restricted over‑the‑counter sales of dichlorvos for lice because of its systemic toxicity. Verify local regulations before purchase.
Alternatives
- Permethrin 1 % lotion, ivermectin oral tablets, and dimethicone‑based shampoos offer comparable efficacy with lower toxicity profiles.
Adhering to the outlined protocol minimizes adverse effects while maximizing eradication of head‑lice infestations.