Best Solution for Redundant Lax Neck Skin After SMAS Lift?

A facelift addresses the jowl and neck by tightening the underlying SMAS and platysma. The neck improvement depends on how extensive your surgeon addtiionally addressed this area. For example was a separate incision made under your neck and a playtysmaplasty done?Was there extensive undermining of the skin in the area of the "turkey waddle", etc. Each of these maneuvers improves the result if applicable to you.

Also realize that in most cases after the  swelling resolves afterwards together with the  natural loss of elasticity in most patients, subsequent skin relaxation to a degree will be seen in some patients.Three to  six months after facelift surgery is when this usually is apparent. This can be corrected if desired in most cases

It's great that you're pleased with the results of your facelift.  Small revisions can be done around 8-12 months after the initial surgery and all of the swelling has resolved.