Detailed answer

Sun exposure can make large pores appear larger due to increased oil production and thickening of the skin. When the skin is exposed to the sun, it produces more sebum which can seep into the pores, causing them to expand. Additionally, prolonged sun exposure can weaken collagen and elastin, the proteins responsible for skin elasticity, leading to sagging and less support for the pores. As a result, the pores can appear more prominent and enlarged. It is crucial to protect the skin from the sun by using sunscreen and seeking shade to prevent further enlargement of the pores.