I bought this sample size because obviously I didn't want to spend a lot of money on something I didn't know would work. I am glad I did. I am going to switch from my Shiseido pore minimizer to this. In a side-by-side comparison, this one dramatically minimized my pores. I took off one star because I didn't notice any sort of luminescence, even though it describes itself as a "pearl" primer. If anything, it mattified my skin.