What it is
Potenza, an RF microneedling device from Jeisys Medical, drives insulated microneedles into the skin at adjustable depths between 0.5 and 4 mm, then passes radiofrequency current through the tips. The current heats a small column of dermis around each tip, denaturing old collagen and starting a remodeling response that builds new collagen and elastin over the following months. The insulation matters: energy releases only at the tip, below the melanocyte-rich epidermis, which is why pigment risk stays low in darker skin.
Dose decides outcome. In a 30-subject study of a comparable device, coagulated volume per needle scaled linearly with energy, from 0.033 cubic mm at 20 mJ to 0.353 cubic mm at 100 mJ. Settings, not the brand on the handpiece, determine what you get. The uses with real evidence: rolling and boxcar acne scars, enlarged pores, fine lines, and early skin laxity.
A 2026 split-face trial found RF microneedling matched fractional CO2 for acne scars, 44 versus 42 percent scar score reduction, with shorter redness and fewer pigment complications. You trade more sessions for fewer days of recovery. One more thing this page will not do: lean on the device clearance. Potenza's 510(k) clearance covers electrosurgery generally, not scars or wrinkles, so every outcome claim here cites a study instead.
When RF microneedling fits
- Rolling or boxcar acne scars: split-face data show efficacy even with fractional CO2, with fewer pigment complications.
- Enlarged pores: a 3-session course improved photographic pore grades in published data.
- Fine lines, including around the eyes: a 4-session trial measured a 49 percent wrinkle score drop.
- Early laxity you want treated without surgery or filler.
- Deeper skin tones (Fitzpatrick IV to VI), where ablative lasers carry more pigment risk.
- You are on or recently finished isotretinoin and were told to wait 6 months: current evidence says that rule is outdated for this device class.
What happens, step by step
- 1
Intake happens online
You fill out history, upload photos, and talk through goals by phone before you ever drive to Torrance; none of that is an exam.
- 2
The in-person exam
At the first visit Antoaneta Mueller, MD examines your skin in person, which California requires once a year before any RF device fires.
- 3
Numbing
Topical lidocaine sits on the treatment area for 30 to 45 minutes.
- 4
The passes
Dr. Mueller or a registered nurse working under her standardized procedures makes needle passes at set depths and energies, about 30 minutes for a full face.
- 5
Right after
You leave the same day looking sunburned, with redness that peaks over 24 to 48 hours.
- 6
Aftercare
No makeup, hard exercise, or direct sun for 48 hours, then bland moisturizer plus SPF, with retinoids and acids resuming around day 10 to 14.
Risks, stated plainly
Honest list, not fine print. Every one of these is part of the consent conversation at your exam.
- The FDA issued a safety communication on this device class in October 2025: burns, scarring, fat loss under the skin, and nerve injury have been reported, some requiring surgical repair. The mitigation the FDA itself points to is a licensed practice where a physician examines you before treatment, which is how this one runs.
- Post-inflammatory hyperpigmentation: about 5 percent of patients in Fitzpatrick III to IV cohorts, usually fading over weeks to months.
- Everyone gets redness for 1 to 3 days; about 1 in 3 gets visible swelling; micro-crusts can shed through day 7.
- Cold sore reactivation if you carry HSV; flag it in intake so antiviral pretreatment is on the table.
- Around 1 in 6 patients in one 40-person series showed no measurable scar improvement; if photos show no response after 2 sessions, you will hear that plainly.
- Not compatible with pacemakers, defibrillators, or other implanted electrical devices; RF current can interfere with them, and metal in the treatment field can heat.
- Pregnancy, active skin infection, keloid tendency, or recent radiation to the area rule out treatment until reviewed.
The evidence
- A 2026 randomized split-face trial of 30 patients found 3 sessions of RF microneedling cut acne scar scores 44 percent, statistically even with fractional CO2 but with shorter redness, less swelling, and fewer pigment complications.
- A 2025 cohort of 397 patients (Fitzpatrick III to IV) found 88 percent of RF microneedling patients reached at least 25 percent scar improvement at 6 months, versus 72 percent with fractional laser.
- A 2024 prospective study of 40 patients (Fitzpatrick III to V) rated results excellent or good in 70 percent after 4 sessions; 7 of the 40 saw no improvement, which is worth knowing before you pay.
- A 2026 pilot in Fitzpatrick IV to VI skin found 3 monthly sessions improved both scarring and existing hyperpigmentation, with no new pigment problems.
Straight answers
- Does it hurt?
- Without numbing, trial patients rated it 5 to 6 out of 10, more than most lasers. After 30 to 45 minutes of topical lidocaine most people describe pressure and heat rather than sharp pain, worst along the jaw and hairline.
- Can I do this while on isotretinoin?
- The 6-month waiting rule is outdated for this device class. A 2017 ASDS consensus found no evidence to delay non-ablative procedures, and a 2024 systematic review of 16 studies concluded delay is not justified, naming RF microneedling relatively safe during or after isotretinoin. Dr. Mueller makes the final call at your exam.
- What does it cost?
- A session is $425 and a 3-session package is $1,140, both itemized on the pricing page; nothing is added at checkout. The first-visit exam is $0.
- Is it safe for darker skin?
- The insulated needles release energy below the melanin-dense epidermis, and the numbers back the design: hyperpigmentation ran about 5 percent in Fitzpatrick III to IV cohorts, and a 2026 pilot in types IV to VI logged no new pigment problems over 3 sessions. Conservative settings first, then titrate.
- What if I do not respond?
- Roughly 1 in 6 patients in one series saw no measurable improvement. Standardized photos are taken every visit; if session 2 shows no change, you will be told directly and offered laser resurfacing or a different plan instead of session 3.
- Who actually performs the treatment?
- Antoaneta Mueller, MD performs every exam. Sessions are performed by her or by a registered nurse working under her standardized procedures, which is what California law permits; estheticians and unlicensed technicians cannot legally fire this device in California.