Compositions comprising flavonoid-containing extracts from plants of the genus citrus and/or isolated citrus flavonoids and specific cationic surface active agents, and said composition for use as an agent for treating infestations with head lice

US10499637B2 · kind B2 · utility

Assignee

• MEDA AB · SE

Inventors

• Heinz Mehlhorn · Neuss, DE
• Guenter Schmahl · Cologne, DE
• Juergen Schmidt · Goldkronach, DE
• Fathy Abdel Ghaffar · Shubra Khit, EG
• Khaled Al Rasheid · Riyadh, SA
• Saleh Quraishi · Riyadh, SA
• Ahmad Al-Farhan · Riyadh, SA

Key dates

• Filing date: Nov 25, 2016
• Grant date: Dec 10, 2019
• Expiry date: Jul 27, 2037

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02A50/30
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

A method for treating an infestation of head lice in a patient in need thereof by killing the head lice and preventing a final development and a hatching of larvae from lice eggs. The method includes applying an effective amount of a composition on the hair of the patient. The composition includes about 0.1 to 1 wt.-% of at least one isolated Citrus flavonoid and 2 to 7 wt.-% of at least one cationic surface-active agent. The cationic surface-active agent is selected from a quaternary ammonium salt having one or two linear saturated C8-26 alkyl chain(s), wherein the remaining alkyl residues are C1-6 alkyl groups, and palmitamidopropyltrimonium chloride.