Van Gogh paintings: 'turning white'
March 11 2015
Public Radio International reports that Van Goghs paintings are slowly becoming whiter. The reason why, scientists in Belgium have deduced, is the 'red lead' he used, also called plumbonacrite:
plumbonacrite is suspected to be one of the first synthetically-made paints known to man, and van Gogh was a particular fan of the stuff. In many of his paintings he used bold colors — including the red hue — which apparently degrades like a Gobstopper candy when exposed to light.