Liposuction is the gold standard for removing excess fat to sculpt the body including reducing a double chin. Liposuction is a minimally invasive outpatient procedure that can be performed in many cases under local anesthesia with or without twilight sleep. The recovery time is generally a few to several days. It is consistent, effective, and precise.
Coolsculpting is a new, exciting treatment that can sculpt the body by freezing your fat. The procedure is completely noninvasive and requires no anesthesia and no downtime. The results generally take a few months to appear. The amount of fat that can be removed using Coolsculpting is generally much less compared to liposuction (for example, a 20% reduction in fat versus a 50-60% reduction). The results from Coolsculpting are also somewhat less predictable compared to liposuction. At present, Coolsculpting is mostly limited to treating the belly, flanks, and inner thighs.
In brief, liposuction is more appropriate for those desiring signficant and dramatic body contouring, while Coolsculpting is suitable for those wanting a noninvasive treatment with no downtime who are willing to accept a much more modest improvement in shape.