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What is the double eyelashes?

Double eyelashes indicate that the eyelashes are thicker and look great. Eyelashes grow on the front lip of the eyelids and are arranged in 2-3 lines, short and curved. The upper eyelashes are long and long, usually 100-150, with an average length of 8-12 mm, slightly curved forward and upward. In general, the upper eyelids are tilted and blinked. Males are 110 degrees-130 degrees, accounting for 78.8%, and closed eyes are 140 degrees-160 degrees, accounting for 83.5%. Women are roughly the same as men, and eyelashes have protective effects.


When the eyes are closed, the upper and lower eyelashes are not entangled. The upper and lower eyelashes are longer and more central, and the inner corners are the shortest.

Eyelash hair follicles are rich in nerves, so the eyelashes are very sensitive, and touching the eyelashes can cause blinking reactions. There are sweat glands and sebaceous glands around the hair follicles, and their drainage tubes

Open in the eyelash follicles.

The role of the eyelashes: the eyelashes have a filtering effect to prevent the loss of dust and moisture in the eyes. Researchers have found that the filtering function of the eyelashes helps to reduce

The accumulation of particles (dust) in the air in the eye, the researchers used wind tunnel tests to study the different lengths of eyelashes to keep the eyes moist and prevent the eyes

The impact of dust. The length of the eyelash was found to be 1/3 of the width of the eye, and the evaporation of water and dust accumulated in the eye was reduced by 50%.

Researchers believe that this length of eyelashes can effectively prevent and reduce the flow of air in the eye. Beyond this length, it will not block the air

But it will become a "funnel" of air blowing into the eyes, increasing water evaporation and dust accumulation in the eyes. In other words, too long eyelashes will make the eyes
It becomes drier and dustier, and when the eyelash length exceeds the eye width by 1-3 times, the eye liquid evaporation rate increases.


The best length is 1-3 long, thick eyelashes, many people crave, but the eyelashes are not as good as they are. Scientists at Georgia Institute of Technology, USA

The length of the eyelashes of 22 mammals was studied and it was concluded that the "optimal length" of the eyelashes was 1/3 of the width of the eye. If its length

Beyond this "best length", it will keep your eyes moist, reduce its effectiveness, and even affect the health of your eyelashes.