Application of fluorescence technique in studying facial skin

Abstract

This study introduces using simple optical system for fluorescence stimulation by UVA light to obtain in vivo facial skin fluorescence images. The red fluorescence was observed on normal skin and skin with comedones, while inflamed facial skin emitted the blue light. The fluorescence spectra were measured for determining the origination of facial red fluorescence. With an emission peak at the wavelength about 630 nm, the measured spectra showed that protoporphyrin IX responds to red color in facial skin. Analysis of the fluorescence imaging and spectra can give information about the disease state of skin and can be used for designing non-invasive optical devices for skin diagnosis