What is eyeliner?

There is a line under the eye, which is the eye surface.

People in China often say that lying silkworm is the protruding part under the lower eyelashes when laughing, which is actually composed of orbicularis oculi muscle.

The ocular surface is also called the laughing muscle (the name used by China people to describe it). The ocular surface is a band-shaped protrusion about four to seven millimeters near the lower edge of eyelashes. It looks like a silkworm baby lying on the edge of the lower eyelash, with obvious smile and lovely eyes. It can not only set off the eye contour of double eyelids, but also protect eyes.

Now, I believe everyone knows that the ocular surface can play the role of eye contour, and everyone should also know the charm of fundus. The charm of fundus is to make the outline of eye surface more in line with personal temperament and make eyes more lovely and charming.