A Comparative Study of Red Dyed Hair on a Professional Coloring Chart: Focusing on A, M, L Company

전문가용 염색 차트의 적색 염색모 비교 연구: A사, M사, L사를 중심으로

In recent times, the hair coloring market has undergone rapid changes and expansion. Yet, beauty salon professionals have encountered challenges in attaining the desired hair colors. Due to a scarcity of relevant research, this study aimed to quantify the lightness (L*), redness (a*), and yellowness (b*) of red-dyed hair using the hair color charts of a prominent hair dye brand from various countries, aiming to delineate any discrepancies. Additionally, it sought to enhance beauty salon workers' comprehension of red-dyed hair and red dyes, ultimately contributing to the beauty industry by improving customer satisfaction. The study employed a chroma meter (CR-400) for color comparison, manufactured by Konica Minolta (Tokyo, Japan). Subsequently, the lightness (L*), redness (a*), and yellowness (b*) values from the hair color charts of Companies A, M, and L were each measured five times. These measurements were then comparatively analyzed using means and standard deviations. Specifically, after selecting red-dyed hair with a level of 8 or higher on the hair color chart from each brand, means were calculated. Subsequently, the redness (a*) and yellowness (b*) of the hair dyes from Companies A, M, and L were compared. In terms of red expression, Company A showed the highest levels, while Company L exhibited high levels of both redness (a*) and yellowness (b*) in virgin hair. This study is limited as it only covered three companies (A, M, and L) and investigated samples from the red-dyed hair chart exclusively. Nevertheless, it is anticipated that the study results will contribute to the growth and development of the Korean beauty industry. This can be achieved by enhancing customer trust and providing better services through uncovering differences among hair coloring brands and discovering the colors customers prefer.