The desire to be beautiful is a basic human instinct and desire. Color is represented by the reflected wavelengths of light, and all beautiful designs are made of color. I am teaching beauty color to students in the Department of Beauty and Health. I am instructing students to find out which colors are suitable for which skin tones, and to find personal colors that go well with customers' skin tones and provide consulting services. As I was teaching students about color, I had a lot of questions. The color black has a bigger negative image than a positive image. But why do people buy and drink a lot of Coke even though it is black? I was also very interested in successful design marketing cases using color psychology, and I thought, what if it was applied to the beauty color psychology? This interest in me has grown even more due to the coronavirus pandemic. Many people infected with coronavirus are quarantined in confined spaces, and even after the quarantine period, people suffer from various sequelae called Long-COVID or PostCOVID syndrome. Many people report feeling helpless, tired, and depressed. There is still no clear and specific treatment for this, but I would like to carefully suggest an alternative called “color therapy”. People can be psychologically or physically stable and find vitality to their health when they are close to colors that they like or go with. However, during the quarantine period, and after the quarantine is over, how can we apply colors that help people to prevent depression, which is a mental and physical aftereffect of the coronavirus, and restore health? This is considered to be a very complex and difficult task, as each person, ethnicity, and culture may have different skin colors that match their preferred colors.