I'm 30 and am quite slim (132lb, 5'10") but genetics kindly gave me a double chin! I have visited two cosmetic surgeons - one recommended liposuction, the other recommended Ultherapy as he said there's only a little fat and that the problem was skin laxity, which he says liposuction won't fix. Ultherapy is more expensive, I don't like how I have to go back after 12 months or so, and it has mixed reviews, but non-invasive sounds good... Which of these in your opinion is more likely to work?