What is the best type of pillow/way to sleep for anti-aging?

Very good question! I recommend my patients sleep with their head elevated for the first week or so after a facelift to reduce postoperative swelling. This is probably why your surgeon recommended the wedge pillow. Back sleeping is also best during this time. Back sleeping is also recommended to prevent the formation of some types of wrinkles, although some patients simply find this position too uncomfortable to adhere to long-term. I recommend you check with your surgeon for instructions on how long to keep your head elevated after your surgery and once your initial recovery is completed, return to the sleep position that is most comfortable for you.

Proper sleeping positions after facelift surgery are debated. Everyone agrees on elevation of the head but comfort is also important so don’t get in weird positions that you can’t sleep in.  Make sure the neck does not rest on the chest.  Ask your plastic surgeon for specific instructions, as it could somewhat affect your recovery.  After a few weeks, sleeping position will not affect the longevity of your facelift. I personally prefer the my pillow.com pillow. I would recommend that you see a board-certified plastic surgeon in your area that is a member of both ASPS & ASAPS and performs a lot of facelifts if you want a second opinion and of course, make sure you follow up with your own surgeon and talk about this. I hope this helps and wish you all the best in your surgery and event. If it does, please take a moment to up vote this answer on the “respond” button on the top right.  

A wedge pillow is good for keeping the head elevated after a facelift, however using a couple of pillows will work as well. Sleeping on your back and keeping the head elevated  will help control swelling. Be sure to follow all post operative instructions. Good luck.