During the treatment, the deep layers of the skin are subjected to heat. This warming procedure leads to the break-up of heat-resistant bonds within the collagen molecule and allows the contraction of the collagen fibers. The dermal tissue is thoroughly renewed by this process. In addition to causing the collagen molecules to contract, the radiofrequency treatment has a positive effect on fatty tissue. The deep heat exposure increases the permeability of cell membranes and the metabolization of fat so that fat loss in the treated area is specifically promoted. After the heat exposure, dead skin cells are removed in a method similar to microdermabrasion. The skin is thus prepared for the subsequent injection of the active ingredients.