You shouldn't be smoking at any time before or after this or you'll be throwing your money away
I am sure that you already know the answer to this question - smoking has helped to cause those wrinkles that you are paying dearly to abolish. So it is really important for you to stop smoking prior to having this done or you are pretty much wasting your money.
Additionally, the healing time will be much higher and results won't be as good. There are some fantastic smoking cessation programs and options these days, so good luck and use it as a 'reward' for your good choice to stop...