Pore size is mostly determined by genetics. Pores aren’t visible until our teenage years. This happens as dead skin and excess oil produced by your hormones stretch the pores a little, making them more visible. As we age, the pores on our face can get larger or smaller. Typically our skin gets less oily as we age, meaning pore size could reduce slightly. On the other side, our skin also loses elasticity as we age, which could also make them appear larger. The size and appearance of our pores are byproducts of the general health of our skin. If your skin is really healthy and hydrated and well exfoliated, it will reflect light better, which helps minimize the appearance of pores, Dr. Justine Hextall, Dermatologist. You can unclog pores and minimize their appearance a little with the right products, but don’t expect a dramatic change. Your pore size will always fluctuate depending on the health of your skin and your hormones. Dr. Hextall recommends focusing on the overall health of your skin and sticking with a proper skincare routine.