http://www.advancesinhealth.com/acne-treatment/acne-pimples/acne-problems/acne-care/index.html Skin irritation can cause swelling of the tissues that in turn, cause the pores to become narrower and in [...]

http://www.advancesinhealth.com/acne-treatment/acne-pimples/acne-problems/acne-care/index.html Skin irritation can cause swelling of the tissues that in turn, cause the pores to become narrower and in greater damage of being blocked. Exposure to high levels of chlorine is a known irritant. An allergy to normally occurring skin bacteria can also cause rather sudden irritation.