Yes, you can use concealer to prime your eyelids. However, we would recommend that you stick to a lightweight and long lasting formula. This will ensure that the makeup does not crease, or it does not end up looking caked on and too thick.
Just remember not to apply too much. When it comes to concealer on the eyes, less is more. Even if you have dark marks and circles, if you use a lot of concealer in the eye area, it will never blend properly, and you will end up with lines and creases that will put years on your appearance!
Simply place a small amount of concealer on your finger, and dab it into the center of your eyelid, patting it into the skin. Make sure you smoothen out the edges, from the inner corner of the eye all the way to the outer corner for a soft, smooth base, ready for your eyeshadow.
Try using the E.L.F. Camo concealer as it offers lightweight but full coverage, is long lasting, yet conceals and covers imperfections. On the other hand, you could try a medium coverage, oil free concealer such as this one from Maybelline as a primer for your eyelids.