If you have ever stood in front of the Mona Lisa at the Louvre, you may have noticed she has no eyebrows. She also has no eyelashes. Was Leonardo da Vinci sloppy?
The answer involves both fashion and chemistry.
Renaissance Fashion
In Florence in the early 1500s, fashionable women routinely shaved or plucked their eyebrows. They also plucked the front of their hairlines to create a high, broad forehead — considered a sign of intelligence and beauty. Paintings of the period regularly show women with smooth foreheads and minimal facial hair.
That said, art historians for centuries have debated whether the Mona Lisa originally had eyebrows that were lost — and modern science has weighed in.
The 2007 Discovery
In 2007, French engineer Pascal Cotte used multispectral imaging to scan the Mona Lisa at extremely high resolution — revealing 25 secrets hidden under the surface. Among them: traces of single hairs over the left eye, suggesting Leonardo did originally paint eyebrows that were either:
- Removed during cleaning over the centuries
- Faded due to chemical breakdown of the pigment
- So fine they were nearly invisible to begin with
Other Hidden Features
Cotte's scan also revealed:
- The original portrait was wider — Leonardo or a later restorer cut both sides
- The blanket she holds was originally transparent
- Her smile was once smaller and broader
- Her face was originally larger and more detailed
Why It Took So Long to Notice
The Mona Lisa is painted in sfumato — Leonardo's signature technique using extremely thin layers of glazes. Detail is built up gradually with subtle gradations. Some details have simply faded over 500 years of light exposure, oxidation, and cleaning.
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