EMS, or electrical muscle stimulation, sends small electrical currents through your skin to trigger muscle contractions underneath. When used on the face, this repeated contraction and relaxation works like a targeted workout for facial muscles, which can firm sagging areas, reduce the appearance of wrinkles, and give skin a more lifted look over time.
How EMS Works on Your Face
Two electrode pads or contact points are placed on the skin over a target area. A mild electrical current passes between them, and rather than stimulating the muscle directly, it activates the nerve that controls that muscle. Once the electrical signal crosses a certain threshold, the nerve fires and the muscle contracts, just as it would if your brain told it to. The difference is that EMS can target specific muscles more intensely and consistently than you could through facial expressions alone.
The current used in EMS devices is measured in milliamps (mA), which is strong enough to produce a visible muscle twitch or squeeze. You’ll feel a pulsing, tingling sensation that ranges from barely noticeable to moderately intense depending on the device’s settings. Most people describe it as odd but not painful.
Muscle Firming and Lifting
The most well-supported benefit of facial EMS is that it physically thickens the muscles beneath your skin. A 2025 study published in Aesthetic Surgery Journal Open Forum measured facial muscles with ultrasound before and after an EMS program. On the treated side of the face, the muscle around the mouth thickened by roughly 14%, going from 1.40 mm to 1.60 mm in one representative case. The temporal muscle (near the temple) increased about 8%. The untreated control side showed virtually no change, less than half a percent.
Why does thicker muscle matter for your skin? Facial skin sits directly on top of muscle. As muscles thin with age, skin loses its structural support and begins to sag. Building that muscle back up creates a firmer foundation, which can lift and tighten the overlying skin in a way that’s similar to how body muscle tone affects how clothing fits. This is the mechanism behind the “non-surgical facelift” claims you’ll see from device manufacturers.
Effects on Wrinkles and Sagging
An 8-week clinical trial published in the Journal of Cosmetic Dermatology tested EMS on one side of participants’ faces while the other side received only basic skincare. After two months, the EMS-treated side showed measurable improvements in both wrinkles and sagging compared to the control side. Participants themselves rated visible differences between the two sides in subjective questionnaires, confirming the changes weren’t just showing up on instruments.
The wrinkle improvement likely comes from two factors working together. First, plumper muscles smooth out the skin’s surface from below. Second, repeated muscle contractions increase local blood flow, which delivers more oxygen and nutrients to skin cells in the area. Better circulation can give skin a temporary “glow” after each session and, over weeks of consistent use, may support the skin’s natural repair and renewal processes.
Reducing Puffiness
Facial puffiness often comes from fluid that pools in tissues, especially around the eyes and jawline. Your lymphatic system is responsible for draining this fluid, but unlike your blood circulation, it doesn’t have a pump. It relies on muscle movement to push lymph along. When facial EMS triggers contractions, it essentially mimics the pumping action that moves stagnant fluid out of tissues. Research on electrical stimulation has shown it can reduce edema (fluid buildup) in both animal and human studies, and this effect is one reason people notice an immediate “de-puffed” look after a session, even before any long-term muscle changes kick in.
EMS vs. Microcurrent Devices
These two technologies get lumped together in skincare marketing, but they work at very different intensities. EMS operates in the milliamp range and is strong enough to make muscles visibly contract. Microcurrent devices use microamps, which are a thousand times weaker. At that low intensity, microcurrent cannot trigger a motor nerve to fire, so your muscles won’t twitch or contract during treatment.
Microcurrent is thought to work at the cellular level, promoting tissue repair and protein synthesis through subtle electrical signals that mimic the body’s own bioelectric currents. EMS, by contrast, is doing something more mechanical: physically exercising the muscle. If your primary goal is lifting and firming, EMS is the more direct route. Microcurrent may be better suited for people who want gentler stimulation focused on skin texture and healing rather than muscle building. Some higher-end devices combine both technologies.
How Long Before You See Results
Most clinical research on facial EMS uses an 8-week protocol, and that’s a realistic timeframe for noticeable structural changes. You may see some immediate effects after your first session, including reduced puffiness and a temporary lift from increased blood flow, but these fade within hours. The lasting changes in muscle thickness and skin firmness require consistent use over weeks, similar to how you wouldn’t expect visible muscle definition from a single gym session.
After reaching your desired results, ongoing maintenance sessions are needed to preserve them. Professional-grade body EMS treatments typically recommend a maintenance session roughly every six weeks. Home facial devices generally suggest more frequent use, often three to five times per week during the initial phase, then tapering to a few sessions weekly for upkeep. Each session typically runs between 5 and 20 minutes depending on the device.
Who Should Avoid Facial EMS
EMS is off-limits if you have any implanted electronic device, including a pacemaker, defibrillator, or neurostimulator. The electrical current can interfere with these devices in dangerous ways. You should also avoid it if you have metal implants in the treatment area, active skin disorders or infections on your face, epilepsy, or if you’re pregnant.
People with certain heart conditions, including recent heart failure, severe arrhythmias, or a recent heart attack, are also excluded from EMS use in clinical settings. If you have a history of blood clots, uncontrolled high blood pressure, or have had surgery in the treatment area within the past few months, skip EMS until you’ve been cleared. For most healthy adults without these conditions, facial EMS at the intensities used in consumer devices carries minimal risk beyond mild skin redness or tingling at the electrode sites.