How can I tighten loose skin after weight loss?

Generally the only way to manage loose skin is via a dermolipectomy procedure.

There are alternatives. Titan, Thermage, Velasmooth, Accent, etc. However, I generally see the patients who have tried these and have been dissatisfied. I rarely see someone who has undergone these treatment modlaities and achieve satsifactory results. It doesn't mean that it doesn't work but on a scale of 1-10, these techniques may accomplish a 2-3 when you need an 8-9.

Furthermore, it has been my experience that even at the end of a tuck/lift/tighthening procedure on a weight loss patient, I have been surprised by the laxity which can recur several months later and have advised patients that they may need a second tightening procedure for the best result.

The only way to tighten loose facial skin after weight loss is to perform a face/neck lift.

After significant weight loss, the skin becomes lax and loose in the jowls, face, and neck. At this point the laxity is significant enough for a comprehensive face/neck lift to be performed. The procedure will tighten excess sagging skin, muscle structure, and remove any additional fat deposits in the neck that may be diet-resistant fat.