EXTRA rhine is a hair treatment designed to enhance vitality, using an infusion of cinchona bark extract. This lotion rejuvenates, strengthens, and imparts shine and flexibility to your hair. It promotes growth while ensuring your strands remain robust and free from dryness and flaking. The formula targets the roots specifically and has undergone dermatological testing, ensuring it's cruelty-free. To use, simply apply to either dry or slightly damp hair, gently massaging with your fingertips. There's no need to rinse, as it won't leave your hair feeling greasy or unclean.