@stoneMason-- Yes, egg white mask is good for pores. It can reduce their size and appearance.
If you don't want to use real eggs and make the mask at home, there is a facial mask product made with egg whites that I know of. It belongs to an Asian skincare line. I've not used the mask, but I've used the face wash. It made my skin feel so soft and my pores did look better after using it.
If you want to save money and if you don't mind dealing with raw eggs, it's better to make the mask fresh at home. Adding some raw honey or lemon juice will improve the scent. Adding honey will also make it easier to apply. Honey has anti-inflammatory properties. It's also hydrating and soothing so it's a great ingredient to add to this mask.