How should tar soap be used against lice?

How should tar soap be used against lice? - briefly

Apply a generous layer of tar soap to clean, dry hair, massage into the scalp and strands, let it sit for 5–10 minutes, then rinse thoroughly with warm water. Repeat the treatment after 7–10 days to eliminate any newly hatched nits.

How should tar soap be used against lice? - in detail

Tar‑based soap can be an effective agent against head‑lice when applied correctly. Begin by selecting a product that lists a concentration of coal‑tar or similar acaricidal ingredient; verify that the label indicates suitability for pediculicidal use.

1. Preparation

   • Wash the scalp with a mild shampoo to remove excess oil and debris.
   • Rinse thoroughly and towel‑dry until the hair is damp but not dripping.

2. Application

   • Dispense a sufficient amount of the soap into the palm, enough to cover the entire scalp.
   • Spread the lather from the roots to the tips of the hair, ensuring contact with the skin and hair shafts where nits attach.
   • Use a fine‑toothed comb to distribute the product evenly and to dislodge any visible insects.

3. Contact time

   • Leave the soap on the scalp for the period specified by the manufacturer, typically 10–15 minutes.
   • Do not exceed the recommended duration, as prolonged exposure may cause irritation.

4. Rinsing

   • Rinse the hair with lukewarm water until all foam is removed.
   • Do not apply additional conditioners or styling products immediately after rinsing.

5. Post‑treatment

   • Comb the hair with a nit comb at least once daily for the next 7 days to remove any newly hatched nymphs.
   • Repeat the entire application process after 7 days to eliminate any surviving eggs that may have survived the first treatment.

6. Safety precautions

   • Perform a patch test on a small area of skin 24 hours before the first use to check for allergic reaction.
   • Avoid use on broken skin, scalp lesions, or in individuals with known sensitivity to coal‑tar derivatives.
   • Keep the product out of reach of children; do not apply to infants under 6 months unless directed by a healthcare professional.

7. Storage

   • Store the soap in a cool, dry place, sealed tightly to preserve potency.

Following these steps maximizes the likelihood of eradicating head‑lice while minimizing adverse skin effects.