I recommend the WakeMake Stick Shadow, which is great for using on the under-eye area.

This is the WakeMake Glitz Longwear Stick Shadow in color 08 Low-Fi that I've been using a lot lately.

It's a stick, so it's easy to use, and

It's also great to carry around when traveling.

Since it is a pearlescent product, it is great to use as an accent on the under-eye area.

If you use it on your under-eye area, you look at least a little bit younger.