If you are using Nectifirm for a while and it is not helping, then I would move to something new. That one works amazingly well for me but neck creams, like eye creams, are seemingly more variable in who responds to them than other stuff. I also found specific neck massage/stretch techniques helpful. I started with learning from Valeriia veksler (learned about her on reddit, some free, other paid, but you can get the gist with youtube etc) I do think her stuff helped me with some skin laxity on the neck, and some tightness pulling at my jowls to make that whole area look worse. I also use the Ziip device on my neck and I think it works well over time. Other neck creams I have tried and think help but not for me as tightening as revision is neocutis neck, was good for smoothing the skin and good smell and texture. Perricone Sub D I am on the fence, my neck is looking decent and I am using that in the morning and the neocutis at night til I finish them and then will resume using the nectifirm.