Pierre Soulages, some paintings start to liquefy!

The softening and running of the paint on some of Pierre Soulages' paintings from the 1960s is a mysterious phenomenon that is disconcerting scientists and could potentially upset fans of the master of the Outrenoir.
This strange occurrence has affected a few dozen of his paintings and is the opposite of what normally happens as paintings age, which is cracking and becoming brittle.
The restorer specialist in Soulages, Pauline Hélou de la Grandière, along with a team from the CNRS and the Saint-Etienne Optical Institute, are working to understand the phenomenon and prevent it from occurring on other canvases.
The place and period of the affected canvases are the common points, painted between December 1959 and March 1960, and the supplier of the paint and the strong pollution with sulphide present in Paris at that time are possible causes.
The team is exploring various avenues but has not yet come to a conclusive answer. Understanding the phenomenon is crucial to preserving Soulages' work and other post-war paintings.
A device has been developed to monitor the brightness of the fabrics to track the progress of the phenomenon. France info
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