Multiphoton tomography of four European astronauts has been performed in the European astronaut center before and after their 6months space mission on ISS. Interestingly, an increased biosynthesis of collagen, a reduced melanin content, and a thinner epidermis was detected. More MPT studies on astronaut’s skin should be performed before going to Mars.
[PDF-Download: theneweconomy.com: Skin problems. spring 2015]