First topic message reminder :

Like the kind where you drip them on your scalp and they are supposed to make your hair grow faster. One of my friends took this and she swears by it. Has anyone tried these before?

My suggestion- Try it out. Although, I never really believed in these serums and other products available in the market, I suggest you to try it, My sister lives in S. Korea and she bought a serum which reduced her hair fall drastically and promoted hair growth.
So, try the product out as the direction says and if it works- there you go,
and if it doesn't-find yourself another one.

PS: TIPS:
If you want your hair to grow faster- you can always try biotin. I've heard that it really helps.
Also massage your scalp with lukewarm castor oil for at least 10 minutes.