Eyelashes can grow back and usually grow back following most of the causes mentioned above. Like the hair on the top of the head, the hair on the eyelashes grows, falls out and grows back; this process takes between 4 and 16 weeks (Aumond, 201). That said, eyelash growth can be affected by hair loss. Eyelashes that don't tear off at the root, for example, if they were burned by a fire or were cut too short, will grow back in about six weeks, Healy says.
With lashes torn off at the root or that have completely fallen out, they can last up to two months. Growing, falling out and growing back are natural parts of the eyelash cycle. Latisse lengthens the eyelash growth phase and increases the number of eyelashes that grow, but it takes at least two months to see results. The bulb is connected to the dermal papilla (blood supply) that nourishes the eyelashes so they can grow.
The growth and development of eyelashes begins with the growth of these follicles, which consists of three phases. This curved shape of both rows of eyelashes helps to remove sweat and foreign particles from the eyes. That is, as long as there is no trauma or lasting damage to the eyelid itself or to the hair follicles, the eyelashes should grow back. The eyelashes are very sensitive to the touch and, when an object or particle touches them, they send automatic signals to the brain to close the eye.
The eyelashes on the upper eyelid are longer and there are usually more eyelashes than those on the lower eyelid. They can work with you to determine the exact cause of eyelash loss and advise you on treatments. Similarly, treating medical conditions or stopping chemotherapy medications (when recommended by your healthcare provider) will allow eyelashes to grow back. Eyelashes that fall out naturally, are torn off, or even accidentally plucked out with an eyelash curler usually grow back within a few months.
Here, experts explain everything you need to know about eyelash loss, including how long it takes them to grow back. This stage lasts 3 to 4 months before the eyelash falls out and re-enters the active growth phase. The eyelid has a reflective response, allowing us to blink at the threat of external danger, and the eyelashes act as a barrier against possible irritants. Curlers, eyelash extensions, magnetic eyelashes, and mascara that isn't replaced often enough can cause this.
If an eyelash falls out (or is removed) unnaturally during this phase, that follicle remains empty while it completes this phase and passes to Telogen. Eyelashes protect the eyes from allergens, dust, lint, dirt and other particles that can cause eye irritation or injury.