Last Updated: May 10, 2026

Claims for Patent: 3,886,277

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Summary for Patent: 3,886,277

Title:	Methods of controlling dandruff using 5,7-dichloro-8-hydroxy quinoline
Abstract:	A method and composition for controlling dandruff on the human scalp using 5,7-dichlor-8-hydroxy quinoline or a salt thereof.
Inventor(s):	Rudolf Randebrock, Volker Bollert, Heinz Lukesch, Gertrud Muller, Ludwig Rappen, Friedhelm Galle
Assignee:	Hans Schwarzkopf and Henkel GmbH
Application Number:	US359046A
Patent Claims:	1. A METHOD OF CONTROLLING THE FORMATION OF VISIBLE DANDRUFF COMPRISING APPLYING TO THE HAIR AND A SCALP OF HUMANS AFFECTED THEREWITH A COMPOSITION COMPRISING A NON-TOXIC PHARMACEUTICALLY ACCEPTABLE CARRIER AND 5,7-DICHLOR-8-HYDROXY QUINOLINE IN AN AMOUNT SUFFICIENT TO PROVIDE EFFECTIVE ANTI-DANDRUFF CONTROL. 2. The method of claim 1, in which the composition contains from 0.05 to 5.0% by weight of the 5,7-dichlor-8-hydroxy quinoline. 3. The method of claim 1 in which the composition contains from 0.01 to 5.0% by weight of the 5,7-dichlor-8-hydroxy quinoline. 4. The method of claim 1 in which the composition contains from 0.5 to 2.0% by weight of the 5,7-dichlor-8-hydroxy quinoline. 5. A method of controlling the formation of visible dandruff comprising shampooing the hair and scalp of humans affected therewith with an anionic, cationic or amphoteric detergent composition containing 5,7-dichlor-8-hydroxy quinoline in an amount sufficient to provide effective anti-dandruff control. 6. The method of claim 5, in which the composition contains from 0.05 to 5.0% by weight of the 5,7-dichlor-8-hydroxy quinoline. 7. The method of claim 5 in which the composition contains from 0.1 to 5.0% by weight of the 5,7-dichlor-8-hydroxy quinoline. 8. The method of claim 5 in which the composition contains from 0.5 to 2.0% by weight of the 5,7-dichlor-8-hydroxy quinoline. 9. The method of claim 5 in which the hair and scalp of humans is shampooed with from 5 to 20 grams of the 5,7-dichlor-8-hydroxy quinoline. 10. The method of claim 9 in which the 5 to 20 grams is applied in two separate consecutive treatments. 11. The method of claim 9 in which shampooing is conducted twice each week for 2 weeks, and once each week for the next 4 weeks.

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