PROYOU the fixer shampoo 350 ml PROYOU the fixer shampoo 350 ml is an affordable and effective shampoo designed to help strengthen damaged hair and give it a healthy, shiny look. It is made with natural ingredients, such as argan and macadamia oil, to nourish and protect hair. It is also sulfate-free and paraben-free, making it gentle on all hair types. This shampoo is suitable for all hair types and is perfect for repairing and restoring weak and damaged hair.