Pores are a natural part of skin structure and exist in every skin. These small surface openings let skin release its natural oil (sebum). Their visibility varies from person to person, largely depending on genetics, skin type and age.
In oily skin, pores often look more prominent because sebum production is higher; oil and dead cells accumulating on the surface can make them appear larger. Gentle, regular cleansing is the basic step to support pore appearance.
Pores cannot be "closed" — they're physiological. But gentle cleansing, barrier-friendly care and balance-supporting products can help them look smoother. See a dermatologist if prominent pores bother you.