A day spa is a business that provides a variety of services for the purpose of improving health, beauty, and relaxation through personal care treatments such as massages and facials. The number of day spas in the US almost doubled in the two years from 2002 to 2004, to 8,734, according to the International Spa Association, and by 2020 there were 21,560 spas across the United States, according to Statista.[1][2]