Review: L'oreal Studio Secrets: Smoothing Resurfacing Primer

This primer is quite expensive: it costed 18€. It was also not so easy to open,as you can see in the second picture, where the L'oreal-logo was ripped in two to open it.
In the advertisement it reads that it should reduce visibility of the pores. In reality it doesn't do that.
Then what does this primer actually do? It's really smoothing, and makes it so much easier to apply your foundation. This way you have to use less foundation.
Still, I don't think I will ever buy it again, since it's expensive and doesn't live up to its promise.