In our new paper in ACS Applied Polymer Materials, we applied our recent insights into the molecular structures of zinc carboxylates to follow the evolution of zinc carboxylates in oil paint polymers. Using ATR-FTIR spectroscopy and constrained peak fitting algorithms, it was possible to accurately track structural changes during paint drying and ageing. Interestingly, it turns out that the zinc carboxylates can be used as markers for the local chemical conditions inside oil polymer networks.