Skin flexibility is one of those things you can thank your parents for. Although it can be impacted by certain behaviors, such as smoking and excess sun exposure, the tone and suppleness of your skin is mostly coded in your DNA.
Persons with great skin flexibility tend to look younger than their age, and respond well to plastic surgery. Persons with the opposite inherited characteristic, skin laxity, encounter problems when the volume of fat and tissue below the surface shrinks.
Skin lacking flexibility will not conform to the smaller shape, but instead hang loosely, creating unattractive folds of skin and an overall look of droopiness.
This volume reduction can be caused by losing a significant amount of weight, or by a plastic surgery procedure that has eliminated pockets of fat below the surface.
The less resilience you have in your skin, the quicker signs of aging will appear on the surface, whether it is the neck or any other area of the body.