Viviscal: What If....?

I'm intrigued enough by the Viviscal testimonials to want to try it for myself. (For those not in the know, Viviscal is a fish oil derivitive that's supposed to treat hair loss and speed hair growth.) I don't suffer from hair loss, but I'd like mine to grow faster.I have one concern: If the drug makes the hair on your head grow in faster and fuller, would it have the same effect on the hair on the rest of your body? I mean, I can do without shaving my legs twice a day or suddenly having to wax my face.I know it's an odd question, but it's a serious one....Ally