The purpose of this study was to investigate the relationships between the hairstyle behavior, hairstyle image preference and life satisfaction of women in their 20s, 30s, and 40s, and to examine the differences of the hairstyle behavior, hairstyle image preference, and preferred hairstyle according to demographic variables. The research method was a survey method using a questionnaire. Total of 674 women in their 20s, 30s, and 40s were tested, 309 of whom residing in the Seoul metropolitan area, with the remaining 365 residing in Gangweon-Do. Life satisfaction factors such as socio-economic satisfaction, happiness, and physical satisfaction significantly influenced the women's hairstyle behavior. The women with higher level of physical satisfaction had higher level of conformity, individuality, fashion, and interpersonal orientation of hairstyle. It also showed that the higher the level of socio-economic satisfaction meant greater preference for graceful hairstyle images. As well as the level of happiness correlated with the preference for feminine and sophisticated hairstyle images. The women who preferred long layered wave hairstyles liked feminine, natural, and sophisticated hairstyle images. The women in their late 40s had higher interpersonal orientation of hairstyle than those in their early 20s and 30s. Overall, a natural hairstyle image was favored the most, whereas a unique image was favored the least.