A new research result has been published.

It says that a compound called plumbonacrite was used in the sketch.

It has been said that plumbonacrite has also been found in Rembrandt's paintings, suggesting that a very similar paint recipe has been passed down, but
one article says that plumbonacrite is formed when lead oxide combines with oil.

The study says that mixing these two substances was a technique used to help the paint dry.

《Image by public domain》

I felt a strong desire to prevent the Mona Lisa from being copied, but I did not know that, apart from such intentions, compounds were used for the purpose of promoting the drying of the painting.

As someone who is currently researching the smell of oil paint, I feel that this is a picture that cannot be ignored.

The painting is an oil painting on a poplar panel and is thought to have been created between 1503 and 1506.

It was originally purchased by King Francis I of France, but is now French national property and is on permanent display at the Louvre Museum in Paris. The work was innovative in many ways, including the uncertainty of its subject matter, which is often described as a "mystery," its large-scale composition, its delicate three-dimensional depiction, and its optical illusion, and has continued to fascinate people and become the subject of research to this day.