A lot of people want to grow eyelashes on their own, so they can achieve a specific look in their eyes. What they do not realize is that the human body can take care of growing eyelashes. Similarly, eyelashes follow a cycle. The old ones are replaced with new ones every four weeks. Of course, you do not notice that many eyelashes fall out because each has its own cycle. Some may have already fallen out earlier due to the rubbing of the eyes or applying a makeup with harmful chemicals. So if you see a small eyelash that has been removed, do not be concerned as it is going to grow back.