Best neck treatment for skin laxity and/or platysma showing in early 30s? (Photo)

I'm 31 and a year ago started to see 2 vertical lines forming under my chin. When I turn my head to the right, the band going from my chin to my clavicle area sticks out very prominently. Is this loose skin or muscle or both? I have seen one surgeon who suggests a chin implant and to cut or tie my platysma bands at the same time. He said not to do a facelift at this time. I'm looking for confirmation that this course of action will give me the best result or any advice on this issue. Thank you!








