SPACOIN: The First Spa Project-Applied Blockchain in the World

INTRODUCTION
Being an abstract concept, beauty has been constantly regarded as a standard to judge a person’s physical attractiveness. Nowadays, thanks to the successful contributions to continuously advanced technologies as well as the changes in defining and evaluating on “beauty”, the word of beauty care has become much more extensive and various. In addition, the trends of beauty care have remained changeable day by day. Even, at the time being, beauty care is not only a re