August Moon of 1440 eloquently explained why the subject in the iconic Leonardo da Vinci painting Mona Lisa appears to be missing her eyebrows, noting that scientific discoveries had proved they were once there. It turns out that restoration is the culprit, specifically 500 years of restoration, a process that can actually remove small amounts of paint even by the most skilled craftsman.
Källa: How 500 Years of Restoration Made the Mona Lisa’s Eyebrows Disappear
