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Scabies

Derbac M Liquid is an effective treatment for head lice and crab lice. It contains malathion, which works by killing lice and their eggs to help clear the infestation and prevent it from returning.

Head lice are commonly spread through close contact, particularly among children, while crab lice are usually spread through intimate contact. Prompt treatment helps stop the spread and relieve symptoms such as itching and irritation.

Treatment options include:

  • Malathion liquid treatment – Works by coating and killing lice and nits to break the life cycle
  • Repeat application – A second treatment after 7 days may be needed to ensure full removal
  • Combing methods – Using a fine tooth comb helps remove dead lice and eggs after treatment

How to choose the right treatment:

  • Use malathion-based treatments for effective lice and egg removal
  • Ensure full coverage of the hair, scalp, or affected area
  • Repeat treatment as directed to prevent reinfestation
Scabies
Derbac M Liquid
Derbac M Liquid

From £18.49

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LYCLEAR DERMAL CREAM PERMETHRIN 5% W/W 30G
LYCLEAR DERMAL CREAM PERMETHRIN 5% W/W 30G

From £24.99

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Frequently asked questions

These treatments help eliminate scabies mites, which cause intense itching, redness, and skin rash. Products like Lyclear and Derbac-M work by killing the mites and their eggs, relieving symptoms and preventing further spread.
Apply the treatment as directed on the packaging, usually to all affected areas and the entire body from the neck down. Follow the instructions regarding duration of application and washing off. For best results, treat all household members simultaneously, and wash clothing, bedding, and towels to prevent reinfection.
Scabies treatments are generally safe and effective when used correctly. Some people may notice mild skin irritation or redness. Avoid contact with eyes, mouth, or broken skin. Persistent itching may continue for a few days even after the mites are gone—this is normal. Seek medical advice if symptoms persist, worsen, or if signs of infection develop.
You should notice gradual relief of itching and irritation within a few days. The rash and discomfort typically improve over 1–2 weeks. Completing the full treatment as instructed ensures all mites and eggs are eradicated and reduces the risk of reinfection.
Starting is simple, quick, and safe: complete the online questionnaire and place your order. A qualified prescriber will review your answers, and once approved, your treatment is dispatched for next-day delivery (from the time your prescription is approved).

Our Clinical Authors

Omar El-Gohary

Written by

Omar El-Gohary

CEO & Superintendent Pharmacist | GPhC Registration: 2059792

Jabbar Ali

Medically reviewed by

Jabbar Ali

MPharm Clinical Lead | GPhC Registration: 2205490

This page has been written by a registered UK pharmacist and reviewed by our clinical team to ensure it is accurate, clear and reflects current clinical guidance.

Last medically reviewed: 20 August 2026

Last updated: 21 August 2026