wearing spf 50 is helpful, also getting sleep, and not doing and drugs and alkohol and sugar are all helpful, but mother time will get us in the end. if you do all those perfectly, you can look 5 years younger, depending on genetics. a good dermatologist can slice off another 5.
fatt cells can move absolutly, its a cosmetic procedure.
the neck area is a tricky one, you have fat cells getting larger even if you are loosing weight, you have gland, and the h bone, and musscles. all saging down..