clean the face up. no hair, so mask fits better against skin.
there are full face masks, with a fan inside, that pushes air to you. but these masks are rather expensive, and might work with facial hair. the blower might help keep you cooler under the mask.
pending on how small you need to get down to, to filter and start getting into microns, and in that start buying cannisters, that fit a given face mask. something that just covers nose and mouth, but not the eyes can work. you sweet but work.