Concealer has many different uses, so buying a good quality one is very important. Concealer is used to hide imperfections, used for an eye primer, and even to give a cleaner look to your eye shadow such as the photo on the right.
Credit goes to Jessie Blush. I"m not sure if she uses this mac product. but this is just a demonstration on how concealer can clean up eye brows!
As you can see, adding concealer can really make a difference in eye brows; which is my main reason for wanting to try out this product. When it comes to a good concealer, this product by mac is said to be worth it.