The first stage is called Anagen also known as The Active Growth Cycle. During the Anagen stage, this is the only time eyelashes grow. Cells begin to divide rapidly, adding to the hair shaft and causing the eyelashes to grow. This cycle lasts anywhere from thirty to forty-five days tops.
After the growth cycle has finished, next is Catagen. The Categen cycle is considered to be the transition stage because eyelashes are no longer growing. Not many lashes are in this stage. The hair follicle shrinks and attaches it self to the hairs root. If eyelashes happen to fall out, be pulled, or plucked at this time, eyelashes won’t begin to grow back until after the Categen cycle has finished. This stage usually lasts for two and three weeks.
The last stage is the Telogen. At this stage, the eyelash and hair follicle are considered to be at rest. There will not be any new lash growth while the eyelashes are in this phase. This cycle lasts for two to four weeks. Each eyelash hair is in its own phase of the growth cycle. It is not until the follicle moves back into the Anagen phase that you’ll shed the old lash, which is then replaced by an actively growing careprost eyelash hair.