How long do the effects of a mini lift last? 59 y/o concerned about worsening jowls (photo)

Based on the photos, your most ideal procedure would be to have a deep plane facelift with necklift together. This procedure will give you a better and longer lasting result (10 years or more). A mini facelift can be done with a nice improvement in the jawline, but not the neck. If performed properly you can still get 5 years or more out of it. Be sure to see a facial specialist for consultation.

In your age and with very mild signs of aging, patient should expect duration of 10-12 years, if not longer. Based on this photo, you would achieve the best and longest lasting result with a SMAS based lower face/neck lift. In person consultation with a board certified plastic surgeon with experience in facial rejuvenation or a teleconference would give you better and more accurate information. Good luck.