Strange black blood-pimples...
Occasionally after i pop a white head, i pop it and maybe a day later this day gray/black spot appears where it used to be. Its not a blackhead, and its a rather hard pimple. Usually after awhile i try to pop it, and it pops blood, and if i keep squeezing past the blood, it pops some of the white stuff.
These are really strange, i get them every so often. What are these, and do they have any risk of scars or anything?