Presidents are closely monitored, and that includes their hair. Few presidents leave the White House with as few gray hairs as when they went in. As President Obama celebrates his 50th birthday, we take a look at the changes in past presidential manes.
Barack Obama, then a candidate for a Senate seat in Illinois and one of the keynote speakers of the 2004 Democratic National Convention, addresses delegates during the second night of the event at the Fleet Center in Boston, July 27, 2004. Gary Hershorn/REUTERS Buy Photo