Abstract
The makeup foundation presented in this study has the effect of correcting the appearance of the skin by
coating the spots and fine lines that develop on the surface of the aging skin. Furthermore, it helps the
wearer look healthy and have a natural, bare-skin look. However, there is still no technique to measure
the visual impression and the light penetration distribution in the depth direction, which are important
aspects in the design and evaluation of foundations. In this study, we introduced a visible-light optical
coherence tomography (OCT) system using an RGB LED light source. We presented a method of simultaneously
measuring and imaging the surface state of the foundation and the distribution of light invasion
in the depth direction.
