A decent sized sample, I was able to use this for the past week or so so I can give a good assessment, having used it in different situations and even just using it on its own one day.
It feels like a regular primer to me with a slight nude-colored tint that seems to serve little to no purpose. It does work fine as a primer - it kept me looking matte and helped my makeup stay throughout the workday without needing touchups for after work dinner - but it doesn't minimize pores, or it doesn't minimize my pores anyway. For the money, there are better primers out there.
Finally, I've met a makeup product I didn't like! I will not be considering buying the big version of this.