Was recently injected with 1/2 syringe of prevalle silk to correct downturned lips. Unfortunately no results can be seen (im aware it was a small amount to begin with). I was told that fillers around the mouth with a combination of botox might correct this problem. My question is which one is best botox or "fillers", I am very young (23) so this is not due to age. Also what should I expect to pay as I live in the NYC area. Thanks to all the doctors who take the time to answer!