Technology guide
How radiofrequency firms the skin
Why a radiofrequency session gives a temporary radiance boost, and why a course of treatment is needed for a lasting result. The two-stage mechanism.
Two mechanisms, two timescales
Radiofrequency first acts through an immediate contraction of existing collagen, which lasts from a few hours to a few days. It then acts through the production of new collagen, which builds up over several weeks and lasts much longer.
The immediate effect
Under the effect of heat, some of the bonds that maintain the structure of the collagen fibres loosen and the fibres shorten. The skin looks firmer and fine lines are softened. When the tissue returns to its normal temperature, this effect largely fades.
The delayed effect
Moderate heating acts as a warning signal for the skin: it triggers a small inflammatory reaction, which activates the fibroblasts. These produce new collagen, which assembles into fibres and consolidates over the weeks.
Why a course of treatment
Each session triggers a new wave of collagen production. Closely spaced sessions sustain this production before it drops off, and the effects add up. Too close together, they tire the skin; too far apart, they lose their cumulative effect.
Setting the heat correctly
Too low a temperature does not stimulate enough; too high and it becomes painful and can burn. Cooling the epidermis makes it possible to heat the dermis without damaging the surface. Adjust the power to your client's skin type and tolerance, with a test at the first session.
How long does the result last?
The result continues to improve for several months after the course, stabilises, then slowly fades with the natural ageing of the skin. One or a few maintenance sessions a year prolong it.