A recent randomized clinical trial had shown that the VASER liposuction produced clinical significant skin retraction.
"Regarding skin retraction, the VASER-assisted lipoplasty-treated side resulted in a statistically significant improvement in skin retraction of 53 percent relative to suction-assisted lipoplasty (17 percent per liter versus 11 percent per liter, p = 0.003) with 33 paired sites using a two-tailed t test. "
Nagy, et al.. A multicenter, prospective, randomized, single-blind, controlled clinical trial comparing VASER-assisted Lipoplasty and suction-assisted Lipoplasty. Plast Reconstr Surg. 2012 Apr;129(4):681e-9e. doi: 10.1097/PRS.0b013e3182442274.