Hello!!! I have found that the best way to increase any kind of body hair groth is to save first. Shave wherever you want hair to be and then when it groes in it will be thicker then it was before. Shave the same area untill you get it as thick as you want it. Be careful not to cut yourself in this area though... cuts are hard to treat because of the sensativity of the region.
Shaving doesn't increase the number of hair follicles nor will anything else. Shaving just blunts the ends of hair making them seem to be thicker. I've been shaving my face for 28 years and I still couldn't grow a full beard even if I wanted to.
Is your Dad hairy? Is your Uncle, mother, brother, sister? Hair growth is determined at birth not by some miracle cure. You can get rid of hair (shave, wax, etc.) but you can't make it grow where it doesn't want to. I'm taking hair growth all over your body. Face, arms, legs, balls...Get the picture. Hell, I'm 36 and still can't grow a beard. Buck up and get used to it. You'll come into your own if you haven't already.