Does Fat Enter the Bloodstream After Laser Liposuction?

This is a complex answer and may be beyond what you are asking.
Laser lipo is supposed to me similar to mesotherapy in that you use the laser as a modality to achieve fat cell destruction. Mesotherapy uses detergent like agents to accomplish the same. In either case, the fat cells rupture and release triglycerides and lipids which are taken up by the bloodstream. The effect of this on your health is unknown. These fats are in molecule form.
However, when traditional liposuction is conducted (usually following laser liposuction), trauma to blood vessels can cause whole fat cells to enter the bloodstream, a process that is called a "fat embolus". Fortunately this is extremely rare but occurs following liposuction or large bone fractures. It can have serious consequences but occurs extremely infrequently.

Hi, you are referring to other types of treatments. One example is Vanquish, it uses controlled radio frequency waves to destroy fat cells without harming the muscle or skin. The fat cells are then filtered through the body and excreted. It is different from liposuction which is invasive and has longer downtime. Find a board-certified surgeon and discuss realistic goals and expectations to get more information. Best of luck! #RealSelf100

Fat that is emulsified by the laser does not enter the bloodstream.  Most of the fat that is treated by the laser is removed with liposuction, which is always done in my practice.  There may be some components of laser treated fat that are left behind, which does remain.  This is absorbed by the body through the blood vessels and lymphatics, but the actual fat cells would not enter the bloodstream.