I've been trying to figure out what's wrong with my skin about 7 years now. I have still no idea why I get these things and seems like no one else gets them. I get these freaking white things coming out of my pores almost every time I sweat and then go to shower. Or sometimes when I go swimming or just during the day. It is absolutely super embarrassing and every time I see I have these my self confidence goes to 0. Sometimes you can scratch them off and sometimes they are like inside the pore and its impossible. I have tried about 10000 different things and nothing seems to get rid of it. Good diet, living healthy and retin a seems to help a bit. Also zinc pyrithione seemed to help but Im not sure because I had only few days to try it out.
Do you only get them around your nose?
Also are they soft of hard like small grains of rice?
If the problem is acne related then they just look like of clogged pores, when you run you sweat through your pores and the 'white things' get pushed out, when you swim or take a shower the moisture/heat also draws them out of the pore.
Some common things to keeps pores clean/unclogged are washes that contain salicylic acid and glycolic acid, mud/clay masks (love them),nose pore strips, or simply steaming your face well once or twice a week can help to get all the gunk out.