ABSTRACT
Alexey P. Popov Optoelectronics and Measurement Techniques Laboratory, Department of Electrical and Information Engineering, Faculty of Technology, University of Oulu and Infotech Oulu, Oulu, 90014, Finland, International Laser Center, M.V. Lomonosov Moscow State University, Moscow, 119991, Russia
Alexander V. Priezzhev Physics Department and International Laser Center, M.V. Lomonosov Moscow State University, Moscow, 119991, Russia
Juergen Lademann Center of Experimental and Applied Cutaneous Physiology, Department of Dermatology, Universita¨tsmedizin-Charite´ Berlin, Berlin, Germany
Risto Myllyla¨ Optoelectronics and Measurement Techniques Laboratory, Department of Electrical and Information Engineering, Faculty of Technology, University of Oulu and Infotech Oulu, Oulu, 90014, Finland
24.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 620 24.2 Nanoparticles in Sunscreens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 620 24.3 Penetration of Nanoparticles into Skin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 621 24.4 UV-Light-Blocking Efficacy of Nanoparticles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 626 24.5 Toxicity of Nanoparticles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 635 24.6 Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 640
Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 641 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 642
This chapter presents experimental and theoretical data on UV protection by use of nanoparticles as part of sunscreens and some side effects associated with this use.
