How long should the results of a good facelift/necklift last?

The simple answer is that facelift surgery will rejuvenate your appearance 10-15 years, but does not stop the clock.  You will continue to age from there.  If you take care of yourself, then you will age more gracefully than if you don't.  After a good facelift, you will always look younger than if you had not had it in the first place.

It is a tough question to answer as everyone ages differently. If you are careful with maintaining the facial skin with skin care, botox and fillers and healthy living with limited sun exposure then it can last your for 15 to 20 years. RegardsDr J