You can also get free haircuts at most salons if you have long enough hair that you're willing to part with (10 inches+) to donate to Locks of Love.
"Locks of Love is a public non-profit organization that provides hairpieces to financially disadvantaged children in the United States and Canada under age 21 suffering from long-term medical hair loss from any diagnosis."
If you don't have a JCP, or enough for Locks of Love, I did see a coupon in this past Sunday's Smartsource coupon insert for $4 off any haircut service at Supercuts xp 09/16/12