Smallville: Season 4, Episode 3

4 - 3: Facade

Clark faces a surprising new foe in the form of a shy high school girl who turns to plastic surgery to enhance her looks and boost her popularity. However, things go awry when she discovers that her kryptonite-enhanced beauty causes harm to anyone she kisses - and she decides her next victim will be Lana. Meanwhile, Jason and Lana continue to hide their relationship from Clark.