Teenagers Using Botox

This teenage girl uses Botox. No, she's not alone

Last month, Charice Pempengco, the petite Filipino teenager whose knockout voice has wowed Oprah and millions worldwide, caused a stir of another kind. To prepare for her appearance on the Fox show "Glee" this fall, Ms. Pempengco, who is 18, got Botox  injections and a skin-tightening treatment called Thermage. "I want to look fresh when I app...