How does radiofrequency act on facial skin ?
Radiofrequency converts electrical energy into heat within tissues to heat the dermis without removing the skin surface.
This controlled temperature increase acts on existing collagen fibres and triggers a repair response. Fibroblasts are stimulated and gradually produce new collagen fibres. Changes in elastic fibres have also been observed.
The result therefore has two phases. Collagen contraction may produce an early tightening effect. Collagen remodelling then continues for several months. Collagen changes have been observed up to 6 months after monopolar radiofrequency treatment.
Which facial skin problems can radiofrequency improve ?
Radiofrequency is mainly used to improve mild to moderate skin laxity, firmness, elasticity, certain wrinkles and skin texture.
It may be useful when facial structures or the jawline begin losing firmness without laxity significant enough to require surgical management.
Studies of facial radiofrequency also report improved texture and wrinkles. A recent systematic review involving 15 studies and 1 230 patients found improved texture in 71 to 100 % of patients in the four studies assessing this outcome. However, these results must be interpreted cautiously because devices, protocols and assessment methods differ between studies.
Can radiofrequency genuinely restore facial radiance ?
Radiofrequency may make skin more luminous when reduced firmness and uneven texture contribute to its dull appearance. It is not a specific treatment for a dull complexion.
By gradually improving texture and dermal quality, radiofrequency may make the skin surface more even. This effect may give the face a fresher, more luminous appearance.
Radiofrequency does not directly rehydrate dehydrated skin or target the melanin responsible for brown spots. If reduced radiance mainly comes from dehydration or pigmentation, radiofrequency will not be effective.
How long does it take to see facial radiofrequency results ?
The first effects of radiofrequency on skin firmness may be visible quickly, but the result mainly develops over the 1 to 3 months following treatment. Collagen remodelling may continue for up to approximately 6 months.
This gradual progression is associated with the radiofrequency mechanism. Heat has an immediate effect on certain collagen fibres, while new collagen production and reorganisation require several weeks.
Clinical studies confirm this progression over time. A recent monopolar radiofrequency study assessed improvements two months after treatment. Another prospective study, performed after two sessions, observed improvement from 30 days, more pronounced at 90 days.
How many radiofrequency sessions are needed to revitalise the face ?
The number of radiofrequency sessions depends on the technology used. Some devices are designed to obtain a result after a single session, whereas others require several sessions spaced over time.
There is therefore no single radiofrequency protocol. Monopolar, bipolar, multipolar or fractional technologies do not deliver energy in the same way or follow the same treatment protocols.
Some monopolar radiofrequency studies observe improvement after a single session. Other technologies require two sessions or several sessions for gradual improvement.
The number and spacing of sessions are therefore determined according to the device used, energy delivered and extent of skin laxity.
Monopolar, bipolar or multipolar radiofrequency : what is the difference ?
The difference mainly concerns how current flows through tissues and therefore the distribution of energy.
In monopolar radiofrequency, current flows between the treatment electrode and a return electrode positioned at a distance. This configuration delivers energy into relatively deep tissues and is notably used for skin firming.
In bipolar radiofrequency, current flows between two nearby electrodes on the handpiece. Energy is more concentrated between these electrodes.
Multipolar radiofrequency uses several electrodes to distribute energy across the treated area.
However, these factors alone cannot determine a device's effectiveness. Power, frequency, tissue temperature achieved, exposure duration and energy control also influence the result. Available studies use highly variable settings.
Conventional or fractional radiofrequency : what is the difference for the face ?
Non-invasive radiofrequency and fractional radiofrequency do not act in the same way. The former heats tissues through the skin surface, whereas the latter delivers energy more locally and, when combined with microneedles, can act directly in the dermis.
Non-invasive radiofrequency is mainly used to gradually improve skin firmness and mild to moderate laxity. It does not create skin microperforations.
Fractional microneedle radiofrequency combines microperforations with radiofrequency energy delivery into the dermis. It is notably used to improve skin texture, certain wrinkles and acne scars.
It is therefore important to distinguish these techniques : their modes of action, indications and recovery effects differ.
Radiofrequency or laser treatment : what is the difference for revitalising skin ?
Radiofrequency is mainly indicated to improve firmness and skin laxity, whereas laser treatment is more appropriate when the aim is to treat pigmentation marks or textural irregularities.
Radiofrequency uses electrical current to heat tissues and stimulate collagen remodelling. It does not target melanin. Its action mainly concerns firmness, skin elasticity and certain wrinkles.
Not all lasers have the same action. A pigment laser targets melanin in certain marks, particularly solar lentigines. A fractional laser creates treatment zones in skin to improve texture and stimulate skin remodelling, at a depth varying with the technology used.
The choice therefore depends on what impairs skin appearance : radiofrequency is preferred when laxity predominates, whereas a laser is more appropriate when the main problem concerns pigmentation or texture.
Radiofrequency or Skinbooster : which should you choose to improve skin quality ?
Radiofrequency is mainly indicated when skin lacks firmness, whereas Skinbooster is more appropriate when skin is dehydrated, less supple or marked by fine lines.
Radiofrequency heats the dermis to stimulate collagen remodelling. Its action mainly aims to gradually improve firmness and mild to moderate skin laxity.
Skinbooster treatment involves injecting lightly cross-linked hyaluronic acid into skin. It improves hydration, suppleness and fine lines without aiming to create volume.
The choice therefore depends on the predominant problem : radiofrequency mainly acts on firmness and laxity, whereas Skinbooster acts on dehydration, suppleness and fine lines.
Can radiofrequency tighten a sagging face ?
Radiofrequency can firm skin and improve mild to moderate skin laxity. However, it cannot correct significant laxity in the same way as surgical tightening or volume restoration through hyaluronic acid injections.
Radiofrequency heats tissues to induce collagen remodelling. Systematic reviews show improved skin laxity with different technologies, but the extent of the result varies according to the device used, treatment settings and initial degree of laxity.
When significant jowls or marked excess skin are present, collagen remodelling is insufficient to reposition tissues or remove excess skin.
Radiofrequency is therefore mainly indicated to improve firmness in moderately lax skin. With significant laxity, its possibilities are more limited and other treatments must be considered according to the cause of laxity.
What recovery effects follow facial radiofrequency treatment ?
Recovery effects depend on the type of radiofrequency used. After non-invasive radiofrequency, they are generally mild, mainly redness and sometimes slight swelling that usually disappear within 24 to 72 hours.
Available evidence mainly describes temporary redness and oedema. However, the actual duration of social downtime remains insufficiently documented and cannot be generalised to all radiofrequency devices.
After fractional microneedle radiofrequency, recovery effects are generally more pronounced because of skin microperforations. Redness, swelling and small crusts may appear temporarily.
Recovery time therefore varies according to the technique and device used. It must be specified for the treatment actually performed rather than radiofrequency in general.
What are the risks of facial radiofrequency treatment ?
The most common side effects are redness, a sensation of heat and temporary swelling. A burn may occur if excessive energy is delivered.
Clinical studies mainly report mild, temporary adverse effects. A recent systematic review involving 1 230 patients found redness in 17,6 to 100 % of cases according to the study and oedema in 5,3 to 26,5 % of cases. This large variation notably reflects differences between devices and protocols.
Loss of fat volume is also possible with certain technologies or settings. This point is particularly important for a face that is already thin or hollow : treatment intended to firm skin must not cause unwanted fat loss. A systematic review of facial radiofrequency indeed reports fat volume changes with certain techniques.
When is radiofrequency actually useful for revitalising the face ?
Radiofrequency is mainly indicated when skin has reduced firmness, mild to moderate laxity, fine lines or less even texture. It acts by heating tissues to stimulate collagen remodelling.
It is inappropriate when reduced radiance is mainly associated with dehydration because it does not hydrate skin. It also does not treat lentigines or other pigmentation marks, which require specific management.
When skin laxity is significant and associated with excess skin, non-invasive radiofrequency cannot provide the same degree of correction as surgical treatment.
In Geneva, facial examination therefore identifies the cause of the problem : reduced firmness, dehydration, pigmentation or more significant laxity. Radiofrequency is indicated when the aim is to improve firmness and skin quality by stimulating collagen synthesis.
Article written by Dr Valeria Romano
Dr Valeria Romano supports each patient with a comprehensive approach to the aesthetics of the face, body and intimate areas, and to skin and hair quality. Every treatment is based on a personalised medical assessment.
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