What condition leads to split ends in eyelash extensions?

The condition that leads to split ends in eyelash extensions is primarily related to a significant difference in curvature between extensions and natural lashes. When the curvature of the extension does not align well with that of the natural lash, it can create tension and stress at the junction where the two meet. Over time, this mismatch can lead to the natural lashes splitting or fraying at the tips, mimicking the condition known as split ends.

Properly matched extensions—both in length and curvature—help ensure that the natural lash can maintain its health and structural integrity, thereby minimizing the risk of split ends. Proper fitting is crucial for the longevity of both the extensions and the natural lashes.

Other factors listed, while they may impact overall lash health or the longevity of the extensions, do not specifically lead to the issue of split ends. Understanding the biomechanics of lash extensions and natural lashes is essential in preventing such conditions.