Mona Lisa Lacks Eyebrows

The captivating gaze of the Mona Lisa has intrigued viewers for centuries, not least due to the seeming absence of eyebrows and eyelashes. While some art historians once theorized this might have been a deliberate artistic choice by Leonardo da Vinci, or perhaps reflected a beauty standard of the early 16th century where women sometimes plucked their eyebrows for a high forehead, modern scientific analysis offers a more definitive explanation.

In 2007, French engineer Pascal Cotte used a multispectral camera to conduct high-definition scans of the masterpiece. His pioneering technology, capable of projecting 13 different wavelengths of light onto the painting, revealed faint traces of both eyebrows and eyelashes, indicating that Leonardo had indeed painted them. These delicate features, applied with very fine brushstrokes using da Vinci's revolutionary sfumato technique, were particularly vulnerable to the ravages of time and human intervention.

The disappearance of these subtle details can largely be attributed to centuries of restoration work and cleaning. Over its 500-year history, the painting has undergone numerous cleanings, and the less sophisticated methods of the past likely eroded the fine pigment layers that formed the eyebrows and eyelashes. Thus, what appears to be a missing feature is, in fact, a testament to the painting's long journey through history and the challenges of preserving such a delicate work of art.