Scan yields a reproduction of the 'Mona Lisa 's ' face magnified 24 times . The skin tones of Leonardo 's model appear as a warm pink and the sky behind her is a glowing blue , far different from the gray-green tint that covers the artwork today . Image reveals a single brushstroke of a single hair above the left brow . Engineer suggests faded pigment could explain lack of lashes and brows . Comment:
Scan yields a reproduction of the 'Mona Lisa 's ' face magnified 24 times . Image reveals a single brushstroke of a single hair above the left brow . Engineer suggests faded pigment could explain lack of lashes and brows . Comment: