There are two basic laser light methods that can be employed for laser resurfacing: Carbon Dioxide, or CO2, and Erbium. Both of them are used to vaporize damaged skin cells while reducing the risk to the patient by limiting the amount of heat absorbed by the skin during the procedures.
The most important thing that you can do while you are healing is to stay out of the sun, and quit smoking, if you do. The effects of second-hand smoke on healing skin can also be detrimental, so stay away from it as best you can.
Before and after pictures:
https://www.youtube.com/watch?v=iihHLs3bkFA
CoolSculpting works by freezing excess fat cells which leads to the death of the cells. The immune system kicks in and sends enzymes to break down the dying cells. They are then eliminated by the body because they are of no use anymore.
If you find yourself constantly focusing on problem areas and pinching the fat wishing it would just go away, Liposuction may be a great option for you.