Yohmo Tonic is made with a proprietary [Japanese] formula that is proven to effectively deep cleanse the scalp and hair follicles and replenish the roots with beneficial nutrients - preventing dull, dry hair and split ends, or unhealthy hair that breaks easily. Keep your hair soft, smooth and shiny at all times. With less secretions from your scalp, enjoy easy-to-manage hair that feels great to the touch, and start smelling like bouquets all day long. Tested and Proven Formulation.