The size of your skin pores is mostly influenced by genetics, likely you’ll notice family members with the same feature. Also, large pores often coexist with oily skin, which causes the skin pores to appear open and large due to the excess sebum production. No treatment is necessary, but you could adapt your skin care regimen to include pore scrubs that can temporarily reduce their size by keeping them clean and gently exfoliating the surface accumulations of dead skin cells. Pore scrubs are conveniently formulated as cleansers to not only remove impurities, but they can help to diminishing the appearance of your pores and improve the texture of your skin.