Can dermarolling tighten neck skin? Along with prescription strength Retin-A (0.05% and 0.1%)?

I'm 47, and the skin on my face is in great condition. I do look after my skin really well with an array of peptides, vitamins, and prescription strength Retin A. But the skin on my neck, it is saggy, crepey, and loose. I used to have botox for banding but I think that may have contributed to this loose skin I have now? - just at the front, two vertical lines of loose skin. Will dermarolling help? Or is anything else better? It is really getting me down!