(concept; also know as “Fluid Separation & Reabsorption) The process by which fluid and cellular components undergo distinct phases of dispersion and assimilation within skin layers after surgery. During the initial phase, known as postoperative separation, heavier cells congregate and settle while lighter cells remain suspended. Subsequently, reabsorption occurs as the lymphatic system gradually collects and assimilates these components over a period of months to a year. However, reabsorption is not uniform, with lighter, less dense cells being absorbed first, followed by heavier cells. This uneven process can result in lingering sensations such as burning and the formation of unevenly healed areas, which may manifest as concaved lumps and pitting in the skin after liposuction