Would getting 300 shots of Density be effective for restoring skin elasticity?

Will my skin elasticity return if I get 300 shots of Density?

My biggest concern these days is the elasticity of my jawline.
As I get older, my skin sags and my face feels like it's getting longer.

My skin has been sagging overall, so I've tried massaging it and consistently applying cosmetics that are supposed to be good for elasticity, but the results aren't as good as I expected.

I've heard some people say their jawline became more defined after getting 300 shots of Density. Is it effective?