You can use mascara on both your top and bottom lashes, depending on the look you are trying to achieve. If you want a more natural look, you can apply mascara only to your top lashes. However, if you want a more dramatic look, you can apply mascara to both your top and bottom lashes.

When applying mascara to your bottom lashes. It is important to use a smaller brush or a wand with shorter bristles to avoid smudging or clumping. You can also use a clean spoolie brush to separate and remove extra mascara.

Ultimately, the decision to use mascara on your top or bottom lashes or both depends on your preference and the look you want.