Enigmatic smile?

If you have been puzzled by Mona Lisa's smile – how she's radiant one moment and serious the next instant – then your worries are over. It happens because our eyes are sending mixed signals to the brain about her smile.

I don't really see her beautiful or eye catchy, but she is really mysterious. For me, there is nothing really special with the painting except for her smile. It is like a single smile with a thousand expressions.  In a glance you will see her beautiful smile, but when you look again you will see her smiling like an antagonist in an actin movie. Creepy right? 

For me, her smile is just an ordinary smile. A smile that can be made and given by any person. Mona Lisa's smile was just overrated throughout the years that really made it alluring. Let's just be happy for Da Vinci because he made a magnificent painting.