If it were marketed responsibly I'd probably feel better about it. While you're doing the acupuncture face lift, have the acupuncturist do something for your overall health at the same time. Then even if you don't end up looking younger, you'll most certainly feel younger. This treatment is not as marked as a surgical face-lift and patients should understand this. However, it does serve to introduce some people to the health benefits of oriental medicine who might otherwise not have tried it.
Wrinkles are the result of much muscle contraction over years time.
That's why botox works, it relaxes the facial muscles. Further contraction would lead to more wrinkling. Also, for more youthful skin, you don't want more collagen, that gives you a stone face appearance like people affected with scleroderma. Rather collagen is used for specific locations where a deficit in fullness exists, like a previous pock mark site. Perhaps acupuncture works on a deeper level as you mention, yin or qi.