I had really high hopes for this product. I have really oily lids, and I have hereditary dark eye circles, under my eye and on my eyelids. That means I am a tough case.
I am a MAC Nc30, but my eyelids are darker. I applied the Primer Potion in a light layer on each eye, and then applied my e/s. I found that it made some of the shadows look a little chalky on my lids.
The 2nd day I wore it, since I was just staying home, I did an eye to eye test. 1 lid with UD's and 1 day with Laura Mercier's Eye Basics, my staple. The UD did not last as long as the LM. Close, but I'll be sticking with Laura Mercier's.