One CO2 tablet can transform a regular shower to a luxury spa experience. Nagayu CO2 hydrotherapy is the most powerful spa treatment that stimulates the circulatory system. It is achieved through the use of carbonic acid that activates cellular metabolism and accelerates the process of cell regeneration. With a couple sessions of CO2 shower, various skin problems may be improved. It also contains coconut oil that helps condition the scalp and promotes healthier hair one wash at a time. Can be used on shower, bath, or as a face mask.