Biophotonic technologies for non-invasive assessment of skin condition and blood microcirculation

The main results obtained at the author’s laboratory over the recent five years with respect to optical in-vivo skin assessment are reviewed. The exploited optical properties of human skin are briefly regarded, with following description of the newly developed methods and prototype devices. In particular, six non-invasive diagnostic and monitoring technologies based on skin autofluorescence photobleaching, diffuse reflectance spectrometry, multispectral skin imaging, and remission photoplethysmography have been proposed, experimentally implemented, and clinically tested.