About the Author Antony R. Young, Emeritus Professor of Experimental Photobiology . Professor Young’s research career has focused on the effects of sunlight on human health, which are benefi cial as well as detrimental. Thus, it is important to understand the balance between the pros and cons of solar exposure, which vary with different Fitzpatrick skin types. An important part of this work has been on photoprotection by sun- screens and pigmentation. Most photobiology research has been done under laboratory conditions, often with solar simulated radiation, mainly because these are relatively easy to control. However, there is an increasing awareness that the laboratory does not necessarily predict what happens in the fi eld, and this is especially true with sunscreens. In recent years, Prof. Young has been engaged with “holiday studies” to deter- mine the effects of real sun on photobiological outcomes, including the effects of sunscreens. Prof. Young has been a regular contributor to meetings of the American and European Societies for Photobiology, as well as dermatology congresses. He is also a member of the United Nations En- vironment Programme (UNEP)—Environmental Effects Assessment Panel.