How much did Absalom's hair weigh?

More than six pounds

(Every year they cut his hair and weighed it. It weighed 200 shekels, which would be more than six pounds, since a shekel weighed a little more than half an ounce.)
When he polled his head, (for it was at every year's end that he polled it: because the hair was heavy on him, therefore he polled it:) he weighed the hair of his head at two hundred shekels. 2 Samuel 14:26