Microcurrent Against Radiofrequency, Which Does What
Medically reviewed by
4 independent reviewers
Andrew Conrad Barile, PT, DPT
Doctor of Physical Therapy (DPT) | Licensed Physical Therapist (PT) | CEO and Founder, Xtreem Pulse LLC
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Dr. Andrew Conrad Barile is a Doctor of Physical Therapy and the CEO and Founder of Xtreem Pulse LLC, the engineering company behind PureLift. He earned his Doctorate in Physical Therapy from Daemen College and is a licensed physical therapist.
He brings over two decades of clinical and entrepreneurial experience across physical therapy, craniosacral therapy and medical device innovation, built on a working knowledge of human anatomy and muscle physiology.
For PureLift LAB he reviews how current is delivered across all ten levels, from sub-sensory nanocurrent and skin-level microcurrent to motor-level EMS, and how the Infuse pass fits into the same ten-minute routine.
Bertica M. Rubio, M.D.
Board-Certified Physician, Dartmouth Medical School | Medical Director, Antiaging Regenerative Medicine Clinic
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Dr. Bertica M. Rubio is a board-certified physician and Medical Director of the Antiaging Regenerative Medicine Clinic in Redlands, California. She earned her Doctor of Medicine from Dartmouth Medical School and completed her pediatrics residency at UC Irvine Medical Center.
With decades of clinical experience, she specialises in age management medicine, regenerative medicine, wound healing and growth factor therapies, and her practice integrates evidence-based medical science with advanced aesthetic treatment.
For PureLift LAB she reviews articles for medical accuracy across the whole dial, from the gentle nanocurrent and microcurrent settings through to muscle-level EMS and the Infuse pass.
Daniel Grinberg, MD, FACS
Board-Certified Otolaryngologist | Head and Neck Surgeon | Fellow, American College of Surgeons | Mount Sinai
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Daniel Grinberg, MD, FACS is a board-certified otolaryngologist and head and neck surgeon at ENT and Allergy Associates in West Nyack, New York. He earned his medical degree from Columbia University College of Physicians and Surgeons.
He completed his otolaryngology residency at New York University Medical Center, serves as Assistant Clinical Professor at Mount Sinai School of Medicine, and is a Fellow of both the American College of Surgeons and the American Academy of Otolaryngology.
For PureLift LAB he brings a wider clinical lens, connecting at-home facial stimulation from microcurrent to EMS to the anatomy underneath, with the same rigour we apply to every device specification.
Prof. Dr. med. Ivo Buschmann
Chair of Angiology, Medizinische Hochschule Brandenburg | Clinic Director, University Clinic for Angiology
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Prof. Dr. med. Ivo Buschmann is Chair of Angiology at the Medizinische Hochschule Brandenburg Theodor Fontane and Clinic Director of the University Clinic for Angiology at the Brandenburg University Hospital.
He trained at the University of Hamburg, was a Max Planck Society Fellow at the Max Planck Institute for Heart and Lung Research, and held senior consultant posts at the Charite Universitatsmedizin Berlin before his appointment as Chair in 2016.
One of Europe's leading authorities on arteriogenesis, with over 150 peer-reviewed publications and US and EU patents, he reviews for PureLift LAB how the evidence on electrical stimulation is read and where its limits lie.
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Radiofrequency heats the dermis to trigger a collagen response over weeks, and microcurrent passes a current that works at cell level without heating anything, so they address different complaints.
This article compares the two on what decides the result you actually see, such as:
- what each one physically does to tissue
- why 42 degrees is the number that matters in radiofrequency
- what the published figures look like on each side
- session length, course length and cost compared
- which to buy for which complaint, and when to buy both
and many more!
We make one of these two technologies and not the other, which shapes what follows and is stated plainly throughout.
Key Points:
Radiofrequency passes current through tissue, meets resistance, and produces heat, with home devices capping at about 42 to 43 degrees Celsius.
Collagen denatures and contracts at roughly 60 to 65 degrees, so home radiofrequency is a slow remodelling stimulus rather than an immediate tightening.
Microcurrent passes a far smaller current that does not heat tissue, working at cell level instead.
Above the motor threshold, in the milliamp range, current contracts muscle, which is a third thing neither of the above describes.
NEWA's De Novo publishes 1 MHz, up to 10 W and a 42 degree cutoff, the clearest disclosure in the home radiofrequency category.
What radiofrequency actually does
Radiofrequency current passes through tissue, the tissue resists it, and that resistance produces heat. The target is the collagen in the dermis.
Home devices cap the temperature with a thermal sensor, typically at 42 to 43 degrees Celsius. Collagen denatures and contracts at roughly 60 to 65 degrees, which is why a home device is not shortening collagen on the spot.
What it is doing instead is applying a controlled sub-injury heat stress that prompts fibroblasts to produce new collagen over the following weeks, which is why these treatments run in courses and report results at eight to twelve weeks.
The FDA product code for these devices describes radiofrequency coagulation for wrinkle reduction, which tells you plainly what regulators consider the mechanism to be.
What microcurrent does
Microcurrent runs in the hundreds of microamps, far too low to heat tissue meaningfully or to depolarise a motor nerve.
Its claimed effects are cellular, and the evidence is real but modest. Saniee and colleagues examined microcurrent effects on facial skin, and the reported benefits run to texture and appearance.
So microcurrent and radiofrequency are not competing to do the same job by different routes. Radiofrequency is trying to change the structural protein content of the dermis; microcurrent is acting on cells without heat.
Neither of the two contracts a muscle, which is worth stating because both categories borrow lifting language freely.
The third thing, which is neither
Above roughly one milliamp with an appropriate pulse, current crosses the motor threshold and the muscle contracts.
Kavanagh and colleagues measured an 18.6 percent increase in cheek muscle thickness across 108 women over twelve weeks at that level, which is a change in the muscle rather than in the skin or its collagen.
That is our category, and it is a different answer again from either of the two in this comparison.
If you find yourself deciding between radiofrequency and microcurrent because your face has changed shape, the honest answer is that neither is aimed at your problem.
What each side publishes
On the radiofrequency side, NEWA holds a De Novo authorisation whose grant publishes 1 MHz, up to 10 W and a thermal cutoff at 42 degrees. That is the most complete disclosure in the home category and deserves credit.
TriPollar publishes no frequency, wattage or temperature cap for its home device, and Silk'n publishes only a 43 degree cap with no frequency or power.
On the microcurrent side, FOREO publishes 680 microamps, ZIIP 309, Therabody 500 and 7E 350 at a stated 500 ohm load, while NuFACE's figures appear only in filings.
Across both categories, most brands publish a feature list rather than a specification, which we have set out in the full table of 33 devices.
Practical differences
Radiofrequency sessions run longer, typically nine to fifteen minutes, and the protocols are demanding: NEWA's cleared protocol is four minutes across six facial areas, five times weekly for four weeks.
Radiofrequency needs a couplant gel for heat transfer, which is a genuine technical requirement rather than a commercial one, at $15.99 to $53 a bottle depending on brand.
Radiofrequency also carries the longer contraindication list, since it generates real heat: implants, fillers, pacemakers, recent procedures and heat-sensitive conditions all appear.
Microcurrent sessions are shorter, the conductor requirement is often avoidable, and the contraindication list is shorter though still real.
Which to buy
Pinch the skin on your cheek. If it feels thin and settles slowly, your complaint is skin quality and radiofrequency addresses it more directly than microcurrent does.
If the surface is holding but the shape has changed, that is contour, and neither of these two is the answer; muscle-level work is.
If your complaint is dullness, texture and looking tired, microcurrent is a reasonable and cheaper purchase.
They stack without conflict. If you own both, run them on separate days rather than stacking heat and current in one session, and follow each manufacturer's own guidance on spacing.
We do not make a radiofrequency device and have no plans to, so if that is what your skin needs, buy one from someone else. We have written about the devices we do not compete with for exactly this reason.
This article sits inside our full map of the category, where we set out all 33 devices we track, what each one carries and what each brand publishes: Nine Technologies on One Dial, What the Rest of the Market Actually Carries.