If you have coolsculpting on neck will it leave the skin to sag with an older person?

It would be helpful to see photos.  However, if you have loose skin already, CS may not be the best option.  I'd advise you seek consultation with an experienced board certified plastic surgeon. 

Thank you for your question. If your skin is already sagging then you may be left with some more sagging skin. I would recommend speaking with a board certified plastic surgeon for a consultation. This way, you can explain your concerns, learn more about the procedure, and determine if you are a good candidate. Regards, 

This is a little bit of a tricky question to answer.  Everyone's skin will lose elasticity as they age.  This will cause skin to "sag" as we all age.  Unfortunately, Coolsculpting as a younger person will not prevent this from happening. Coolsculpting works by removing the fat cells.  It has little to no impact on "tightening" the skin.  There are other great procedures for tightening neck skin, but Coolsculpting should not be viewed in this regard.  Best of luck!