Could be they base their study on their own
HUMIMIC Chips, which can be used for different applications, they also did hair studies with their chip
2011, BMC Proceedings, Human hair follicle equivalents in vitro for transplantation and chip-based substance testing
R Horland, G Lindner, I Wagner, B Atac, S Hoffmann, M Gruchow, F Sonntag, U Klotzbach, R Lauster, U Marx
2013, Lab on a Chip, Skin and hair on-a-chip: in vitro skin models versus ex vivo tissue maintenance with dynamic perfusion
B Ataҫ, I Wagner, R Horland, R Lauster, U Marx, A Tonevitsky, A Azar, G Lindner