In this study, we propose a method to estimate the concentration of components of lips from RGB lip images. The lips are an essential part of the body, as their shape and color determine a person's facial expression, age, health status, and other aspects of their impression. Therefore, the lips have been of interest in cosmetology, psychology, and medicine as the subject of much research. However, only a few studies measure lip components noninvasively or analyze them histologically. Therefore, our goal is to measure the components of the lips noninvasively. We build a model for each of the vermillion regions and mucosa regions of the lip and the skin regions and discuss the differences in the concentration of the components. The results showed differences in the melanin concentration and blood volume in the skin, vermillion, and mucosa regions.