11.15.05
Patent No. US 6,737,046 B2: Research-ers for Wella AG, Darmstadt, Germany, patented a hair treatment preparation comprising at least one nonionic, amphiphilic associative thickener in a cosmetic carrier, at least one propellant and at least one hair care agent. The hair care agent consists of at least one cationic surfactant and/or at least one silicone compound with at least one hydrophilic group.