Last updated: March 2026
What Is Lash Line?
The lash line is the line of skin at the base of the eyelashes where liner is typically applied—upper and lower.
Lining the upper lash line defines the eye; lining the lower can add depth or drama. Tightlining targets the upper waterline right at the lash base for a fuller lash look.
Tips
- Get as close to the lashes as possible for a natural line. Use a thin brush or pencil for precision.
See it in action
Tutorials that use or demonstrate this technique: