Pore Tightening Serum-Rojukiss

I have large pores which make my face oily and shiny. The pores get larger especially if I don't sleep well or stay up late at night.
Last week, I just bought a Korea product, Rojukiss' Pore Tightening Serum from Watson. It has been a week and I can see the difference on my face, smaller pores and smoother skin.
Will continue to try and see how far the effect is. So far, I am satisfied with it.