The Five Questions to Ask Before Buying Any Facial Device
Medically reviewed by
4 independent reviewers
Andrew Conrad Barile, Fisioterapeuta, Doctor en Terapia Física
Doctorado en Terapia Física (DPT), Fisioterapeuta Licenciado (PT)
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El Dr. Andrew Conrad Barile es Doctor en Terapia Física y CEO y Fundador de Xtreem Pulse LLC. Obtuvo su Doctorado en Terapia Física en Daemen College y aporta más de dos décadas de experiencia clínica y empresarial en terapia física pediátrica, terapia craneosacral e innovación en dispositivos médicos. Su profundo conocimiento de la anatomía humana, la fisiología muscular y la tecnología terapéutica ofrece un enfoque invaluable respaldado por la ciencia para la rejuvenecimiento facial y soluciones antienvejecimiento.
Bertica M. Rubio, M.D.
Director Médico, Clínica de Medicina Regenerativa y Antienvejecimiento | Médico Certificado por la Junta | Escuela de Medicina de Dartmouth
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La Dra. Bertica M. Rubio es una médica certificada y Directora Médica de la Clínica de Medicina Regenerativa y Antienvejecimiento en Redlands, California. Obtuvo su licenciatura en Ciencias en la Universidad Loyola Marymount y su título de Doctora en Medicina en la Escuela de Medicina de Dartmouth (Geisel School of Medicine). Completó su residencia en pediatría en el Centro Médico UC Irvine.
Con décadas de experiencia clínica, la Dra. Rubio se especializa en medicina para el manejo de la edad, medicina regenerativa, cicatrización de heridas y terapias con factores de crecimiento. Su práctica integra la ciencia médica basada en evidencia con tratamientos estéticos y regenerativos avanzados, ayudando a los pacientes a alcanzar una salud óptima y vitalidad juvenil.
La Dra. Rubio siente pasión por educar a los pacientes sobre la ciencia detrás del cuidado de la piel, el rejuvenecimiento facial y las tecnologías no invasivas como EMS (Estimulación Eléctrica Muscular) para el tonificado facial. Sus artículos para PureLift LAB combinan un conocimiento médico riguroso con orientación práctica para lograr resultados reales y duraderos.
Daniel Grinberg, MD, FACS
Otorrinolaringólogo y cirujano de cabeza y cuello certificado | Miembro, Colegio Americano de Cirujanos | Profesor clínico asistente, Escuela de Medicina Mount Sinai
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Daniel Grinberg, MD, FACS, es un otorrinolaringólogo certificado por la junta y cirujano de cabeza y cuello en ENT and Allergy Associates en West Nyack, NY. Obtuvo su título de médico en la Facultad de Médicos y Cirujanos de la Universidad de Columbia, completó su residencia en Otorrinolaringología en el Centro Médico de la Universidad de Nueva York y es profesor clínico asistente en la Escuela de Medicina Mount Sinai. Es miembro de la American College of Surgeons y de la American Academy of Otolaryngology.
La perspectiva quirúrgica de cabeza y cuello del Dr. Grinberg ofrece a los lectores de PureLift LAB una visión clínica más amplia, conectando la práctica de EMS en casa con la anatomía médica subyacente con el mismo rigor científico que aplicamos a cada especificación del dispositivo.
Prof. Dr. med. Ivo Buschmann
Cátedra de Angiología, Hochschule Médica de Brandeburgo | Director de Clínica, Clínica Universitaria de Angiología, Hospital Universitario de Brandeburgo | Ex Consultor Senior, Charité Universitätsmedizin Berlín
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El Prof. Dr. med. Ivo Buschmann es Catedrático de Angiología en la Medizinische Hochschule Brandenburg Theodor Fontane (MHB) y Director Clínico de la Clínica Universitaria de Angiología en el Hospital Universitario de Brandeburgo. Completó su formación médica en la Universidad de Hamburgo, fue becario de la Sociedad Max-Planck en el Instituto Max-Planck de Investigación Cardiaca y Pulmonar, y ocupó cargos de consultor senior en la Charité Universitätsmedizin Berlin Campus Virchow antes de ser nombrado Catedrático en la MHB en 2016.
El Prof. Buschmann es una de las principales autoridades europeas en arteriogénesis — el crecimiento y remodelación de los vasos sanguíneos impulsados por el flujo — con más de 150 publicaciones revisadas por pares y varias patentes en EE. UU. y la UE sobre dispositivos que estimulan el crecimiento de vasos colaterales mediante terapia controlada de tasa de cizalladura. Su investigación conecta la estimulación mecánica y eléctrica con la adaptación vascular, la microcirculación y la perfusión tisular.
Las contribuciones del Prof. Buschmann aportan a los lectores de PureLift LAB una perspectiva de biología vascular que complementa nuestra autoría clínica, de fisioterapia y de anatomía quirúrgica existente — explicando cómo la estimulación EMS activa no solo los músculos faciales sino también la microcirculación que los abastece, y por qué la administración inteligente es tan importante a nivel del flujo sanguíneo como en la contracción muscular.
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Five questions will tell you more about a facial device than every review you will read, and how a brand handles them tells you as much as the answers.
This article covers what actually decides the answer, such as:
- what output figure the device produces, and at what load
- what the pulse width is and why charge decides the effect
- which clearance covers the exact device you are buying
- what you have to keep buying after the box
- where it is made and who actually makes it
and many more!
We answer all five below for our own range, because a checklist you exempt yourself from is marketing.
Key Points:
Ask for output and the load it was measured at; a milliamp or microamp figure alone cannot be compared with anything.
Ask for pulse width, because charge per pulse is what tissue responds to and a short pulse at a given current delivers far less.
Ask for the clearance number covering the model you are buying, then look it up, since a clearance for last year's device does not cover this one.
Ask what the device requires you to keep buying, and at what price, because half this category needs its own conductor at $24 to $100 a bottle.
Ask where it is made; one brand in our map of 33 publishes a country on its own page.
Question one, output and load
Current through skin depends on resistance, so the same device reads differently into different loads and a figure without one is not a specification.
Six of the 33 devices we track publish an output figure on their own page, and two state the load.
PureLift publishes 7 mA at 500 ohms for Face and Pro, 7.7 mA for Pro Edition and 9 mA for Pro Plus and GLOW.
For light devices the equivalent question is irradiance in mW/cm2 and the distance it was measured at, and no mask brand we examined states a distance.
Question two, pulse width
A pulse of current has a duration, and the charge delivered is roughly the current multiplied by that duration.
A device quoting a high current with a very long pulse is doing something quite different from one quoting the same current with a short one.
PureLift publishes 4 microseconds across the range, which is short, and pairs it with a higher current.
Almost nobody else publishes pulse width at all, so if you get an answer, that itself is informative.
Question three, the clearance number
Ask for the K number covering the specific model, then search it at accessdata.fda.gov.
Check that the record names the device you are buying, because a brand can hold a clearance for an earlier model and put the same badge on a new one.
Read the indications for use, which is usually a single sentence and is the whole of what the clearance covers.
We found one device marketed as cleared where no clearance names it, and several where the clearance sits with a manufacturer rather than the brand, which is normal and traceable.
PureLift clearances are K190269, K230506, K221443 and K243587.
Question four, the running cost
Ask whether a proprietary gel or capsule is required or merely recommended, and what a bottle costs.
NuFACE runs $35 to $100, ZIIP up to $79.99, FOREO $41.90, Therabody $29.99, Skin Gym $24, 7E $27 for four ounces.
Droplette is the extreme case, locked by the company's own statement to capsules at $3.57 to $6.07 each.
PureLift works with any water-based serum you already own.
Two years of a required conductor can exceed the difference in sticker price between two devices, which is why the question belongs before the purchase rather than after.
Question five, where it is made
Country of manufacture tells you about quality systems, oversight and recourse, and one brand in 33 publishes it on its own page.
Clearances often reveal what pages do not, naming manufacturers in China, India or Israel, none of which is a criticism and all of which a buyer might reasonably want to know.
PureLift devices are made in Japan in an ISO 13485 facility that has been building medical devices since 1987, and we print that rather than leaving you to find it.
If a brand will not say, it is not a scandal, and it is a data point.
How brands respond is the sixth question
Send those five questions to a customer service address and see what comes back.
A brand that answers with figures has nothing to hide and knows its own device.
A brand that answers with adjectives is telling you something too, without meaning to.
Ask us, and you will get the numbers above, because we have already printed them.
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.
Figures and claims checked on 21 September 2026 against each brand's own published material and the FDA 510(k) database.