What part of the lash anatomy determines the direction in which the lash grows?

The lash follicle is the part of the lash anatomy responsible for determining the direction in which the lash grows. Located beneath the surface of the skin, the follicle is where the lash is anchored and nourished. The orientation of the follicle influences the angle and direction in which the lash extends outward from the eyelid. Consequently, this is essential knowledge for an eyelash extension specialist, as understanding the natural growth pattern aids in the application of extensions for a more natural look.

The other parts of the lash anatomy, while important to the overall structure and health of the eyelash, do not play a direct role in determining the growth direction. The lash base generally refers to the point where the lash meets the skin, the lash root pertains to the portion of the lash that is embedded within the follicle, and the lash bulb is the rounded base of the hair follicle that produces the hair, but none influence the growth direction itself in the way that the lash follicle does. Understanding the function and significance of the lash follicle helps ensure proper extension application and maintenance.