Can you make your pores smaller?
Nope. There is no way no how and cosmetic companies know that which is why their products always say the continued use will only make pores APPEAR smaller. Usually the branding will say “minimizes the appearance of pores.”
Think about it: just a cosmetic product can’t change the physical dimensions of anything on your face!
Any silicone-containing product or a powder will help minimize the appearance of large pores. Niacinamide will make them produce less oil which could help. Or you could use retinol which helps regulate oil production too.