Your eyelashes serve several functions. They help protect the eyes from external irritants, like debris, dust, or other airborne particles. They help prevent injury by triggering the blink reflex when something comes close to the eye. They also redirect airflow over the eye surface, so that less airflow reaches the tear film. This helps keep the eyes hydrated and less prone to dryness or irritation.
Eyelashes help protect and preserve the eyes. But without proper eyelash care, they can weaken and fall out over time. Friction from makeup removal, products that dry lashes out, and overall neglect can all contribute. Certain health conditions and vitamin deficiencies may also lead to weaker lash follicles.