Hydrolipoclasia usually refers to injecting fluid into the fat layer and using ultrasound or cavitation-type energy to try to disrupt fat cells. It is not the same as liposuction, and the results are less predictable. The published evidence and standardization are limited compared with established body contouring options. The main safety issue is not only the device or technique, but who is doing it, what is being injected, whether sterile technique is used, and whether the person is medically trained to recognize complications. Possible problems include infection, burns, bruising, contour irregularity, pain, swelling, or no meaningful improvement. I would be cautious about having an invasive fat treatment performed in a massage setting. A consultation with a board-certified plastic surgeon or dermatologist can help you compare whether observation, more nonsurgical treatment, or liposuction is a better match for your anatomy and goals.