Use an eyeliner color that's a little darker than your natural eyelash color. The idea is to make it look like there is more hair at the roots of your eyelashes than there actually are. This will create an illusion of thicker eyelashes.  Apply a waterproof eyeliner at the waterline under your eyelashes to add the illusion of length without using up eyelid space. With a small push liner brush, push black shadow into the root of the lashes of the upper eyelid. This will give the illusion of a dark lash line. If you subtly extend the line at the outer corners of your eyes, it will also make your eyelashes look longer. If you want to try something a little more difficult, consider “tight-lining”. This technique takes a skilled hand and involves applying eyeliner between each individual hair at its base  creating a subtle line along the edge of your eyelid. If you can afford them, professionally applied eyelash extensions are a beautiful, natural-looking way to enhance your lashes. The process usually takes a couple hours and costs around $100 USD, but the extensions will last for months with only occasional touch-ups. If you decide to go this route, know that it will be more difficult to wash your face. You cannot place too much pressure on your lash extensions without causing them to fall out. You’ll have to wash around your eye or use a cotton swab to clean the actual lashes.

TL;DR in Vietnamese:
Chải mascara. Nối mi.