Neck Tite Lipo Vs Slim Lipo for Contour of Double-Chin and Mild Neck Laxity?

I know Neck Tite Lipo (Body Tite) isn't approved by FDA in USA yet, but are any doctors participating in clinical trials, and if so, what have the results been?

Can anyone compare it to either or both Smart Lipo and Slim Lipo, in your experience? Specific interest in opinions for double-chin and neck area, for middle-age group, who've lost weight, resulting in mild skin laxity under the chin due to weight loss, with slight fad padding still there. Also, which is better for contouring jawline?

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