saw palmetto

has anyone had sucess with this. i have read that self-gratification causestestosterone to turn into dht. so i stopped playing with yourself, spanking the monkey and my face is so clear now. i also noticed that i wasn't loosing anymore hair. but my theory is that my body is still turning a little bit of testosterone into dht because i noticed some hair on my pillow case this morning and i still have like 1 pimple a week.
also i want to start weight lifting again and i'm afraid this will make my body produce more testosterone.

so i read that saw palmetto blocks the formation of dht. has anybody used this before? did it work well? are there any side-effects?

what i'm really concerned about is the fact that i am only 16. will this do hinder my development AT ALL?

i mean one or two pimples isn't that big of a deal but i'd like to have none if i can.