Under-eye hollows and tear troughs at young age? Also, best facelift alternative for descending cheeks for my age?

Without photos and your exact age, it is very difficult to comment upon your specific scenario. If you have tear troughs at a young age, it's usually hereditary. Fillers such as Restylane are a nice treatment option for this. They can also be very useful to volumize your cheeks/midface as well. Another option might be Ulthera which is a non surgical alternative as well. Best of luck.

There are several alternatives for volumization in the mid-face. A combination of short-scar lifts, Implants, fat transfer and fillers would be on a list.See a surgeon who can computer image you so as to help you with realistic expectations