Eyelash Wikipedia open wikipedia design. Eyelashes An eyelash is a hair that grows at the edge of the eyelids. They protect the eye from small things like dust. The average person has hundreds of eyelashes. They have a life span of about 3 months. Wikimedia Commons has media related to Eyelashes. This short article about biology can be made longer. You can help Wikipedia by adding to it. This page is based on a Wikipedia article written by contributors (read/edit).Text is available under the CC BY-SA 4.0 license; additional terms may apply. Images, videos and audio are available under their respective licenses.