About the Authors

David A. Gunn

david.gunn@unilever.com

Affiliation Unilever Discover, Sharnbrook, Bedfordshire, United Kingdom

Helle Rexbye

Affiliation The Danish Twin Registry and Danish Aging Research Center, Institute of Public Health, University of Southern Denmark, Odense, Denmark

Christopher E. M. Griffiths

Affiliation Dermatological Sciences, University of Manchester, Salford Royal Hospital, Manchester, United Kingdom

Peter G. Murray

Affiliation Unilever Discover, Sharnbrook, Bedfordshire, United Kingdom

Amelia Fereday

Affiliation Unilever Discover, Sharnbrook, Bedfordshire, United Kingdom

Sharon D. Catt

Affiliation Unilever Discover, Sharnbrook, Bedfordshire, United Kingdom

Cyrena C. Tomlin

Affiliation Unilever Discover, Sharnbrook, Bedfordshire, United Kingdom

Barbara H. Strongitharm

Affiliation Unilever Discover, Sharnbrook, Bedfordshire, United Kingdom

Dave I. Perrett

Affiliation Perception Lab, School of Psychology, University of St Andrews, St Andrews, United Kingdom

Michael Catt

Affiliation Institute for Ageing and Health, Newcastle University, Newcastle Upon Tyne, United Kingdom

Andrew E. Mayes

Affiliation Unilever Discover, Sharnbrook, Bedfordshire, United Kingdom

Andrew G. Messenger

Affiliation Department of Dermatology, Royal Hallamshire Hospital, Sheffield, United Kingdom

Martin R. Green

Affiliation Unilever Discover, Sharnbrook, Bedfordshire, United Kingdom

Frans van der Ouderaa

Affiliation Netherlands Consortium for Healthy Ageing, Leiden University Medical Centre, Leiden, Netherlands

James W. Vaupel

Affiliation Max Planck Institute for Demographic Research, Rostock, Germany

Kaare Christensen

Affiliation The Danish Twin Registry and Danish Aging Research Center, Institute of Public Health, University of Southern Denmark, Odense, Denmark

Competing Interests

Although no products were tested or involved in this manuscript, it is possible this manuscript could promote sales of anti-wrinkle creams which might lead to financial gain for Unilever PLC.

Author Contributions

Conceived and designed the experiments: DAG HR AF AEM MRG FvdO KC. Performed the experiments: DAG HR CEMG AF SDC CCT BHS AGM. Analyzed the data: DAG PGM KC. Contributed reagents/materials/analysis tools: PGM DP MC. Wrote the paper: DAG CEMG PGM JWV KC.