When pores get clogged with oil and dead skin a blemish forms; when the pore is exposed to air a blackhead forms. Inversely, when the pore is closed and restricted from air exposure, a whitehead forms ...

Hydrocolloid patches help heal pimples by absorbing fluid and keeping bacteria out. Hydrocolloid patches do not work on blackheads, whiteheads, or cystic acne. Some hydrocolloid patches contain ...