Following is a transcript of the video. Narrator: Oil paint is simple. At its most basic, it's just a mixture of oil and pigment. But depending on the color and quality, a liter of this paint ...

"I was very anxious about the girl getting stained under the film and hoped everything would work out, " the artist told Newsweek.

Eight restorers are working on the piece in a specially designed glass chamber for the operation's first stage.