I'm 18 now, and had moderate acne from age 14-17. Since then, it's been mild, however you can see red dots and areas where smaller blemishes are appearing. However, if I look closely at my face in a mirror, I can see large pores, particularly on my nose. They appear as grey/beige dots about 0.5 millimeters in diameter, just under the surface of my skin. If I break the TINY bit of skin covering these 'dots,' I can slowly squeeze out a small, very firm, honey-colored lump about the size of a sesame seed. What are these lumps? Very old sebum that solidified? I can see around 50-100 on my face if I look closely. They've been there for the past year, although they're impossible to see without a bright light and a very sharp eye. I have no other skin conditions such as psoriasis or eczema, so it would be strange for something to be medically wrong. Any Ideas?