IntheUKover£9billionayeararespentonbeautyproductsthatpromisetoimproveandtransformus.Buthowmuchofwhattheseproductspromiseisbasedinscientificevidence,andhowmuchissimplymarketingmanipulation? 　　CherryHealeyteamsupwithindependentscientiststoputeverydaycosmeticstothetestlikeneverbefore.InagroundbreakingstudycarriedoutbytheUniversityofSheffield,andwiththehelpof25volunteers,shediscoversthatmoisturisersmightnothavethebenefitspeoplethinktheydo.