Please please do not get carried away by all the marketing hype that's out there. I'm a little concerned that you are asking specifically about Smartlipo or mesotherapy because of advertisements you've seen or heard. Neither of those procedures is likely to be what your...
Unfortunately all lasers can burn even the SmartLipo. But all of this lies in the experience of the physician. It could leave a scar but there are lasers treatments that can help treat the scar as well.
Smartlipo is for isolated pockets of stubborn fat and not for weight loss. If you have a "spare tire", love handles or something like that, liposuction can help you. However, if you are looking for overall weight loss and a lower number when you step on the scale, liposuction is not suitable....