Microcurrent With a Thyroid Condition, a Pacemaker or Metal Implants
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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A pacemaker or any implanted electronic device rules microcurrent out entirely; the thyroid rule is precautionary; most metal implants and dental work are a placement question rather than a prohibition.
This article sets out what to check before you start, such as:
- why implanted electronics are an absolute exclusion
- what the thyroid guidance rests on, and how strong the evidence is
- dental implants, plates and crowns, and what people actually feel
- fillers, threads and where the timing advice comes from
- the questions worth putting to your own doctor
and many more!
Nothing here replaces your own clinician, who knows your implant and your history and we do not.
Key Points:
Pacemakers, implanted defibrillators, neurostimulators and cochlear implants are an absolute exclusion for microcurrent and EMS.
The thyroid guidance is precautionary practice rather than a documented harm, and it is still the right side to err on.
Dental implants, crowns and plates are not an exclusion, and a metallic taste near metalwork is common and harmless.
Dermal fillers are a timing question rather than a permanent bar, and your injector sets that timing.
Metal orthopaedic hardware away from the face is not relevant to a facial device.
Implanted electronic devices, the absolute no
Applied electrical current can interfere with the sensing circuitry of an implanted device, which is why every manufacturer in this category lists pacemakers as a contraindication.
That covers pacemakers, implanted cardioverter defibrillators, neurostimulators, deep brain stimulators, vagus nerve stimulators, implanted insulin pumps with electronic control, and cochlear implants.
Distance from the face does not resolve it to the point where a brand should be reassuring you, so the answer is no rather than probably.
If you have one of these and want a facial treatment, ask your cardiologist or the clinician managing your implant, and look at non-electrical options such as light therapy instead.
The thyroid rule and what it rests on
Professional training teaches avoiding the front of the neck over the thyroid, and reputable brands repeat it.
What supports that is caution about applying current over an endocrine organ lying close to the skin surface, rather than a body of evidence showing harm from facial microcurrent.
We would rather say that plainly than dress a precaution up as a finding.
In practice the rule costs you nothing, since the thyroid area is not where facial lifting work happens anyway.
If you have Hashimoto's, Graves' or a nodule under investigation, raise it with your endocrinologist before you start.
Dental work, plates and crowns
Dental implants, crowns, bridges and plates are not a contraindication for facial microcurrent, and large numbers of people use these devices with extensive dental work.
What you may notice is a metallic taste, most often near the jaw at higher levels, which is current passing close to the nerves that carry taste and is harmless.
Some people feel a slightly sharper sensation directly over metalwork, in which case lower the level across that area or work around it.
Recent oral surgery is different, and you should wait until your dentist says the area has healed.
Fillers, toxin and threads
Dermal fillers are not a permanent bar, and the question is timing rather than prohibition.
The usual practice is to wait until swelling has settled and the filler has integrated, which practitioners commonly put at two weeks or more, and your injector's instruction outranks any general advice including ours.
Botulinum toxin has its own timing, and we have written about combining the two without compromising either.
Thread lifts are the most conservative case, and you should follow your surgeon's guidance specifically.
Permanent or semi-permanent fillers deserve a conversation before you start rather than after.
Other situations people ask about
Orthopaedic metalwork in a hip, knee or shoulder is not relevant to a device used on the face.
Metal jewellery should come off the treatment area, not for safety so much as because it interrupts the conductive layer.
A history of Bell's palsy is worth raising with your doctor, since facial nerve involvement is a specific situation that general advice does not cover.
Pregnancy, epilepsy and heart conditions are covered in our general safety article.
What to ask your doctor
Name the device, the output figure and the load, since that means more to a clinician than the word microcurrent.
For PureLift that is 7 mA at 500 ohms on Face and Pro, 7.7 mA on Pro Edition and 9 mA on Pro Plus and GLOW, with a 4 microsecond pulse width.
Say where on the face you intend to use it and for how long, which is ten minutes, three minutes per side.
Take the clearance number with you: K190269, K230506, K221443 or K243587 depending on the model.
A clinician given real figures can answer properly, and a clinician given marketing language cannot.
This comparison 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.
Guidance checked on 21 September 2026 against manufacturer contraindication lists and standard clinical practice on electrical stimulation.