The Pureology Hydrate Shampoo and Conditioner Duo Set is a professional hair care product line designed specifically for color-treated hair. With a volume of 33.8 fl oz for each bottle, this set is packed with natural ingredients like Sage Leaf Extract and Rosemary Leaf Extract to provide color protection and hydration. The sulfate-free and vegan formula ensures gentle but effective cleansing and conditioning, making it an ideal choice for anyone looking to maintain the vibrancy and health of their colored hair.