Spa is a hydropathy. Hydropathy can prevent even cure diseases. Hydropathy use water at different temperature, pressure and solute content to play a role on humans' body. Spa brings a lot of efficacies, such as constant temperature cooling, muscle relaxation, brain cell rejuvenation, increase in blood oxygen, promotion of heart function and blood circulation, skin whitening, pore cleaning, body odor clearing, as well as stratum corneum removal of aging skin.