The Art Newspaper reports that the painting is being examined in a conservation studio "to keep it in better condition for future generations," according to a statement from the institution. They are scheduled to return to public view on March 24.
The 1889 canvas is a repetition of the fourth version of "Sunflowers." The work was painted while van Gogh was living in Arles, just a month after he cut off his ear. The original version can be found at London's National Gallery, while versions of three other similar compositions belong to the Philadelphia Museum of Art, the Sompo Japan Museum of Art in Tokyo, and Munich's Neue Pinakothek. A fifth version was destroyed during World War II.
The museum is hoping to remove a discoloring coat of varnish and several retouched areas, which give the canvas a muted orange tone, and were likely added in 1927.
Another issue is van Gogh's choice of cadmium yellow pigment. Scientists recently confirmed that the variety of yellow paint favored by many Impressionist, post-Impressionist, and early modernist artists will oxidize in the light, turning from bright yellow to a dull greenish-brown.
The altered appearance of his work would likely come as no surprise to the artist. "Paintings fade like flowers," wrote van Gogh in one of his many letters to his brother Theo.
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