What you’re seeing is a valuable painting being partially dissolved on purpose.
Fine art is often coated with varnish for the same reason furniture is: it provides a protective barrier to the elements. But varnish turns yellow over time, and an even less attractive colour after a few centuries—which is why art restoration experts need to strip old varnish off and reapply it when a painting becomes unsightly. In a Twitter video posted by Philip Mould on Monday, the art dealer and Fake or Fortune? host showed just how dramatic this transformation can be: Read more