4. Coat both sides of your lashes to thicken them.
For a thin or light-colored lashes, coat both sides by alternating between looking up and looking down while applying mascara. This way your hairs will look fully covered and appear much thicker.
5. Hold the brush at a horizontal angle if you want thick lashes, or turn it vertically for a more natural finish.
The method of holding the brush while applying mascara matters a lot. If you are holding the brush horizontally and wiggling it back then this will give you voluminous lashes, while holding it vertically and running the tip of the brush along the length of your lashes will leave you with a longer, more natural look.