#1 Professional hair brand in the USA. Started by Hollywood actress Paula Kent and her hairdresser, Redken was one of the very first companies to take a scientific approach to hair and discover the formula that remains the alpha and omega of haircare to this very day: PROTEIN + MOISTURE + ACIDIC pH = HEALTHY HAIR. Redken’s products are all rigorously formulated according to these scientific principles, including the Extreme protein based haircare range, and the latest Acidic Bonding Concentrate innovation.