[1] Procter & Gamble Co, Darmstadt, Germany
[2] Dept Social Med Occupat & Environm Dermatol, Heidelberg, Germany
[3] LOreal, Res & Innovat, Asnieres, France
[4] Univ Lyon 1, INSERM U 851, Pierre Benite, France
[5] Univ Trier, Dept Environm Toxicol, Trier, Germany
[6] Univ Groningen, Univ Med Ctr Groningen, Dept Dermatol, Groningen, Netherlands
[7] Informat Network Dept Dermatol IVDK, Gottingen, Germany
[8] Cleveland Clin, Dept Dermatol, Cleveland, OH 44106 USA
[9] Kao, Darmstadt, Germany
[10] Henkel AG & Co KGaA, Dusseldorf, Germany
[11] Univ Manchester, Fac Life Sci, Manchester, Lancs, England