the.com/blackheads
Pores that left the cap off the paint and let it dry.
means Clogged pores where trapped oil and dead skin oxidize at the surface, turning dark.
from From plain English: a head of debris that looks black. Medically an open comedo, from Latin comedere, to eat up — once thought to be tiny devouring worms.
Not dirtThe dark is oxidized melanin and oil, not grime.
Open vs closedWhiteheads are the same plug, sealed shut.
Squeezing taxPressing scars skin and spreads bacteria around.