- May 13, 2012
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I found this good site that shows people what blackhead looks like and how it spreads.
http://www.michigan.gov/dnr/0,4570,7-153-10370_12150_12220-26481--,00.html
http://www.michigan.gov/dnr/0,4570,7-153-10370_12150_12220-26481--,00.html