If you have a Clarisonic Skin Care Brush manufactured prior to July 2007 you may like to read the Voluntary Recall from Clarisonic. Thanks for the note by Melissa in the forums.
For product manufactured prior to July 2007
Clarisonic is voluntarily recalling Clarisonic handles and chargers in response to product safety concerns. The issue is limited to the product’s internal components, not to its effect on the skin. In some instances, the Clarisonic handle or charger can overheat, with the potential for injury or even catching fire. While there are no reports of serious injury or property damage, and the reported incidence rate has been less than 1 in 10,000, we are choosing to act with an abundance of caution.