Different frequency RF machines will require different conductive media - and the same applies to ultrasonic cavitation
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Radiofrequency at lower frequencies
RF treatment gels
Radiofrequency treatment creams and lotions
RF treatment serums
Glycerol and propylene glycol products for low frequency RF treatment
RF treatment oils
Radiofrequency treatment with no conductive medium
Radiofrequency at higher frequencies
RF treatment gels and creams
Glycerol / glycol products for high frequency radiofrequency
RF treatment oil
RF treatment with no conductive medium
Radiofrequency at higher frequencies
RF treatment gels and creams
Glycerol / glycol products for high frequency radiofrequency
RF treatment oil
RF treatment without conductive medium
Radiofrequency at intermediate frequencies
Conductive gel for ultrasonic cavitation. What about oil, cream, lotion or serum?
Electro-mesotherapy effect with the combination of ultrasound/radiofrequency and a concentrated conductive medium
In summary
Conductive skin products for cavitation and radiofrequency: frequently asked questions (FAQs)
What is the best conductive gel or cream for radiofrequency machines?
What is the best RF gel for face?
What is the best slimming gel for a cavitation machine?
Can I use oil with a cavitation machine? Can I use oil with an RF machine?
Caution / Disclaimer
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Many people enquire about what is the best gel, cream, lotion, oil or serum to use for both ultrasound cavitation and radiofrequency.
However, especially for radiofrequency the answer is not clear cut and depends on the type of machine used. If the wrong type is used, burns can occur, especially for radiofrequency treatment.
This article provides a guide of what type is generally needed for different RF/ultrasound frequencies and other variables, and it will also understand you how different types of RF work.
In all cases, please firstly and primarily follow your manufacturer’s instructions and do not deviate from them unless you understand the subject at depth.
The lowest frequency machines (300kHz to 1MHz) are based on ionic currents creating heat in the deep tissues - and unfortunately on the skin surface too, depending on treatment medium.
In this case, gels or creams with high water content applied on the skin will pose little resistance to the electricity generated by the RF machine, so they will not heat up.
However, being composed primarily by water, gels and creams will evaporate with constant movement and heating, meaning constant gel or cream application will be needed.
Gels, being just water and thickener are generally unsuitable, as the dried up thickener will flake, creating a lot of mess.
With creams, however, things are more complicated. Creams and lotions are an emulsification (mix) mix of water and oil, with lotions generally containing more water.
When water evaporates, due to heat and constant moving of the RF handpiece, we are left with oil, which is not absorbed nearly as fast as water by skin. This will indeed pose more resistance to RF currents and therefore it will heat up.
This means that unless we keep replenishing the cream/lotion we will have very high superficial heating. This defies the whole point of radiofrequency treatment, which is deep heating.
The solution is to use a low-fat / high-water content cream or lotion to ensure we are not left too soon during treatment with an oily cream that will create epidermal overheating. We will still have to keep replenishing a low-fat / high-water cream / lotion, to avoid epidermal overheating, but not as much.
Of course, using serums during low frequency RF treatment is unworkable as serums evaporate in no time.
Unless you provide a five-minute treatment, which is pointless, serums do not make any sense.
And contrary to popular belief, serums do not absorb deep in the skin either. They just stay on the epidermis and don’t penetrate (total waste of money - but try to explain that to “beauty experts”...)
There is also a fourth option as a conduct medium for low frequency RF, comprising of glycerine, propylene glycol, hydroglycolic gels and hydroglycolic creams.
Glycerine* and propylene glycol** do not pose as much resistance to electricity as oil in these frequencies and they do not get absorbed as fast by the skin as water does, so they stand somewhere in-between, providing a good compromise.
Still glycerol and propylene glycol they heat up the skin perhaps more than we want to, so combining them with water, in the form of a hydroglycolic gel, or with water and oil, in the form of hydroglycolic gel-cream, is an even better compromise.
* Many low power RF machines are typically operated with pure glycerine as a conductive medium, which heats up epidermis too much, creating skin redness and high temperature, and fooling the unsuspecting therapists and clients that the machine is very strong. It is not. It’s just that the glycerine overheats the epidermis, while deep inside, the dermis and hypodermis heat up very little.
** Propylene glycol is never used on its own, as it is too runny, making a mess everywhere. Propylene glycol also overheats the surface, just like glycerine.
Oil as a conduct medium with a low frequency RF treatment would create electrical arcs between skin and machine, leading to burns. Definitely not recommended.
Finally, having no conduct medium with low frequency RF treatment would create electrical arcs between skin and machine, leading to burns. Definitely not recommended.
The higher frequency machines (10MHz to 5GHz) are based on water molecule rotation creating heat in the deep tissues - and unfortunately on the skin surface too, depending on treatment medium.
In this case, water-containing products (gels, creams, hydroalcoholic gels/creams, lotions serums) cannot be used as a treatment medium as they will be excessively heated, burning the epidermis.
So there are two options left: glycerine/propylene glycol or oil.
Again, in this case glycerine and propylene glycol will give the illusion of effective treatment as they will heat up on the surface of the skin making it look red, while deep in the skin (dermis/hypodermis) temperatures will remain lower.
This simply means ineffective treatment.
Water containing glycerine / propylene glycol products will heat the epidermis even faster, especially with high frequency RF, so they are not a good idea.
Oil on the other hand is completely inert at high frequencies, so it will allow the deeper tissues to be treated properly (if the machine is strong enough) without overheating of the epidermis.
Non-movable (hands-free) high frequency radiofrequency applicators may be used without any conduct medium, depending on the technology they use, always ensuring that sweat (water) does not accumulate.
However, RF designed to be used while gliding on the skin must always be used with a treatment medium, as described above.
RF frequencies of 1-10MHz fall somewhere in-between. In that case some water or some oil can be the right or wrong ingredient in the conductive medium formulation, depending on how the machine operates.
In most cases glycerine or propylene glycol is used, as it does not overheat like oil or water do at different frequencies.
With ultrasound things are not so critical as with radiofrequency, but the choice of conductive medium is still important.
Generally, high frequency ultrasound 1-10MHz would ideally require a gel, but creams or lotions can also be used.
At lower frequencies (30-300kHz) oil can also be used.
Again, serums evaporate very quickly so they do not make sense.
Both ultrasound and radiofrequency enhance the absorption of active ingredients, so if a quality, CONCENTRATED cream/gel/serum/oil is used, there is an extra benefit to be derived from the active ingredients in the conduct medium.
The problem is that most such serums and creams are not that concentrated at all. Quite the opposite: most are in fact very diluted, especially all those “magic” serums advertised.
The other problem is that some actives may actually damage the ultrasound/radiofrequency applicator. Vitamin C (highly acidic) and essential oils are prime examples of that.
And there is yet another problem: some actives can cause irritation to the skin and using RF/ultrasound can make them even more irritating. A good example is strong exfoliating agents, such as glycolic acid. Combining RF and strong acids can be anything from tricky to dangerous - clearly not a good idea.
As we saw above, the choice of conductive medium can turn a radiofrequency treatment more effective, more ineffective or even dangerous. This is because it can lead to low, medium or excessive heat on the surface (epidermis), depending on the combination of machine setup and conduct medium.
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Sometimes we need some heat on the epidermis (e.g. for acne treatment), while in other cases we don’t need any (e.g. for cellulite reduction, deep fat reduction).
So quite often it’s not just the machine and the operator technique, it’s also the conduct medium that’s important.
We hope everything is now is regarding conductive media for RF/ultrasound treatment.
Below are some straight, quick answers to your most common questions related to this subject, to clarify finer points and add more detail.
As described above, there is no single best conductive product (gel, glycerine, cream, serum, lotion, oil etc) for radiofrequency, as there are different types of radiofrequency, some of which would require the use of oil and cause burns if a gel, serum, lotion or cream was used, and vice versa.
So before changing your RF conduct product read this article to familiarise yourself with the science AND also contact your radiofrequency machine vendor to find out what is allowed for your specific machine and what is not.
SAFETY FIRST!
Again, as per the paragraph above, there is no such thing as a single best gel for use on the face. One machine may require a cream while another machine may require a gel, glycerine or oil. In fact, when using different settings some machines may perform better with a different product - e.g. cream, gel or glycerine (the machines that use oil should never be used with anything else).
Before deciding about changing your RF conduct medium, read the article above, discuss with your machine vendor and only if you are sure you know what you’re doing change your RF treatment gel, cream or any other product - especially when treating your face, which is much more delicate than any body area.
For under-eye treatment think three times as hard about what you’re using with an RF machine.
SAFETY FIRST!
As we have analysed in another article, there is no such thing as ‘slimming gel’ or ‘fat burning gel’ for ANYTHING - used with a cavitation machine, RF machine, any machine or no machine.
In fact, we have tried for years the most concentrated formulations with our cavitation and radiofrequency treatments and results were minimal. This means that with the usual diluted commercial products (they are all diluted) there is not chance in hell that there will be any slimming effect on your skin.
So don’t waste your money with misleading claims and fraudulent products.
(And BTW, home use cavitation and RF machines don’t work, so don’t bother with them either, especially when more professional machines are not that efficient either. So instead of wasting money or dangerous and/or ineffective home machines and gels, have professional treatment at a clinic that specialised in these treatments.)
SAFETY FIRST!
Only certain types of RF machines can take oil as a conduct medium, so do not use oil if your machine is supposed to work with gel, glycerine, lotion, cream or serum. See analysis above.
With cavitation, you can use oil or low frequency machines (<300 kHz) but for high frequency machines (>1MHz) ultrasound gel must be used.
Again, before changing anything contact your machine vendor first.
SAFETY FIRST!
The analysis above is for educational purposes only, for the public to understand how conduct media can affect the application of a radiofrequency / cavitation treatment.
This is NOT a professional instruction manual on the use of radiofrequency treatment conductive media. Different machines, according to the technology they utilise, may require conductive media IN CONTRAST to the analysis above - this is only a general article.
As a matter of safety, do NOT change your radiofrequency treatment conductive medium without consulting with your machine manufacturer or distributor first. Blind experimenting can cause burns or other irritation. This article does NOT constitute professional instruction.
SAFETY FIRST!
At LipoTherapeia we have specialised 100% in skin tightening and cellulite reduction for more than two decades and 20,000+ sessions.
This is all we study and practise every day and have researched and tried hands-on all the important skin tightening equipment and their manufacturers.
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At LipoTherapeia we are passionate about phototherapy (also known as photobiomodulation/PBM, red light therapy, infrared light therapy, blue light therapy, LED light therapy etc) and we use the most powerful equipment available today (up to 200mW/cm2), for best results and treatment of large body areas.
We use specialised therapy protocols for skin rejuvenation / anti-ageing, pigmentation / post-inflammatory hyperpigmentation (PIH), moderate/severe acne, skin redness, sensitive/inflamed/irritated skin, wound healing, sports injuries / musculoskeletal pain and overall wellness / well-being.
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