We describe a method of analyzing the appearance of cosmetic foundation applied to the human face. In particular, we
focus on the "oily-shine" appearance, which is caused by sebum. A multi-band camera system with six spectral channels
is used for the analysis of the oily-shine appearance. As a basic analysis, we examine the optical features of oily-shine
by using two artificial skins looking like make-up skin with oily-shine and without oily-shine. We show that oily-shine
can be defined as the standard dichromatic reflection model. On the basis of the above findings, we propose a method
for detecting oily-shine area. This method involves (1) the extraction candidate areas, and (2) the evaluation of
appearance with oily-shine. First, we capture the CIE XYZ tri-stimulus image of an original make-up face by using the
multi-band camera and after a few hours later, capture the same face as a test facial image. Second, the candidate areas
with oily-shine are extracted by applying the Laplacian operator to luminance Y component of the test facial image.
Third, the principal component analysis is performed on the set of luminance and chromaticity (Y, x, y) of each candidate
area. Light reflection of oil-shine is regarded as the specular component of the dichromatic reflection. Finally, we
determine the existence of oily-shine by comparing specular clusters between the original image and the test image. The
proposed method is tested in experiments with subjective assessment for various real make-up facial images.