Both intense pulsed light IPL (also known as broad band light BBL) as well as chemical peels refine the pores. Chemical peels work by exfoliating the pores, as well as stimulating collagen. IPL/BBL work by generating heat in the dermis to stimulate collagen and shrink the pores. There are many effective chemical peeling agents: TCA, Jessner, Glycolic, salicylic, lipohydroxy are all good options. Many companies make IPL/BBL: Sciton, Palomar, Lumenis, Ellipse are all good.
The result of these procedures is best when combined with a maintenance program like retinoids. The procedures will need to be repeated every few months or years as we can temporarily alter pore size, but we cannot do it permanently. Best to pick a qualified board certified dermatologist experience in skin issues for best results.