Whether long tumbling locks blowing in the breeze or a classy up do, who wouldn't want the magic of hair extensions? The ease of being able to change the way you look on a whim, and not spending years waiting for your own hair to grow is probably every girls dream. But unknown to many, extensions can cause serious damage to your hair, due to the weight of the extensions pulling at your own hair. It may break off or even worse, leave you with bald patches.