The hair really covered his arms and legs? I think it is a bit of exaggeration. I have heard that other peptides promotes hair growth, but the hair growth is just moderate. It is not something dramatic.
Just like you, I also think it is just an exaggeration. I believe that peptides can actually boost hair growth, but not to this extent. It is completely a hoax. Do not believe your friend or whoever tells you this (talking to the original poster of this thread lol)