Dandruff

A blonde and a brunette were talking one day. The brunette said that her boyfriend had a slight dandruff problem, but she gave him 'Head & Shoulders' and it cleared up.  
The blonde asked inquisitively, "How do you give shoulders?"

Locked Car

Two blondes were recently observed in a parking lot trying to unlock the door of their Mercedes with a coat hanger. Here is their dialogue:
Blonde One: I can't seem to get this door unlocked!
Blonde Two: Well, you'd better hurry up and try harder! it's starting to rain, and the top is down!

Not Natural

"Miss Jones, we can't employ you as a model," the editor from the men's magazine explained. "It's too obvious that your blonde hair isn't natural, since the hair between your legs is black." The model picked up a paperweight and slammed it down on the editor's fingers. "What the hell did you do that for!" he exploded. She smiled sweetly and said, "Look at your fingers. They're turning black, right? And they've only been banged once."