Luchas de Apuestas (literally translated from Spanish to gambling fights) are matches where both wrestlers wager something specific (the mask or hair) on the outcome. The loser of the match then loses the item, being forced to take off the mask or be shaved bald. It is also possible for a wrestler to put someone else’s item on the line, with the same stipulation applying in the event of a loss.
In matches where hair is on the line, generally the heel wrestler loses the match, as it is designed to humiliate the heel wrestler. Among notable wrestlers who have lost such matches, Gorgeous George, Adrian Adonis, Jeff Jarrett, Kurt Angle, Molly Holly, and CM Punk were all heels when on the losing end of hair vs. hair matches. [Courtesy of wikipedia.com]