Intensive research forms the foundation for light fast, ecologically dyed textiles that can be reproduced. Leentje started this research 25 years ago.
Tinctoria has its own Xenontester or aging machine at its disposal, a necessary aid in the continuous search for the best possible light fastness.
At the earlier stages Van Hengel worked with Raymakers & co, Livos-de, Erfgoed Nederland. Artex.hde.nl, Rubia-nc.com and TUV Rheinland.com. The last still aids Tinctoria.