We build a limited number of devices each month so please answer these 4 questions to see if you qualify
After about 3 weeks, my breakouts and flare-ups have stopped and my redness went down massively.
Charlotte W.
Nova, in real life.
Real Nova users. Real results.
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Rebecca H.Leeds, UK2nd Gen Nova
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Megan T.Austin, TX2nd Gen Nova
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Caroline P.Bristol, UK1st Gen Nova
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Danielle R.Denver, CO2nd Gen Nova
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Hayley M.Manchester, UK1st Gen Nova
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Nicole F.Portland, OR2nd Gen Nova
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Erin C.Edinburgh, UK2nd Gen Nova
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Daniel K.Chicago, IL2nd Gen Nova
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Michelle B.Nottingham, UK2nd Gen Nova
What the studies found.
Two rosacea studies and two reviews of the technology, in plain English.
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Pilot trial · 12 people · 2023
Less redness, fewer rosacea lesions.
Once a day for six weeks on one side of the face: that side ended up with fewer inflammatory lesions and smaller red areas than the untreated side.
Skin Pharmacology and PhysiologyStudy details
- Journal
- Skin Pharmacology and Physiology, 2023
- Device
- PlasmaDerm Flex (CINOGY), a clinic dielectric-barrier-discharge device.
- Limits
- 12 people, no sham control, funded by the device maker.
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Research letter · 2022
Fewer Demodex mites on the face.
Both cold plasma and a topical ivermectin cream reduced Demodex mite counts on the face under confocal microscopy.
Experimental DermatologyStudy details
- Journal
- Experimental Dermatology, 2022
- Device
- Experimental prototype.
- Limits
- A research letter, not a controlled trial; prototype device.
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Review · 2025
Most promising for inflamed skin.
A review of 12 human studies found cold plasma “appears to hold promise” for some conditions, with the stronger results in inflammatory skin conditions.
Journal of Integrative DermatologyStudy details
- Journal
- Journal of Integrative Dermatology, 2025
- Device
- Various clinic devices.
- Limits
- Twelve small studies; the authors call for larger trials.
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Review · 2022
A decade of skin research, reviewed.
Covers cold plasma in wound healing, inflammatory and infectious skin conditions and hair loss, and explains the proposed mechanism: reactive species and local blood flow.
Frontiers in OncologyStudy details
- Journal
- Frontiers in Oncology, 2022
- Device
- Multiple device types reviewed.
- Limits
- A narrative review, not new data.
The 60-Day Skin Trial.
Use Nova on your worst skin for 60 days. Opened, used, doesn’t matter — if your skin doesn’t change, send it back. Full refund, no restocking fee, no interrogation.
And a US$50 gift card for your time.
Air in. Plasma out. Nothing on the skin.
- 01The head charges the airA thin layer of air just above your skin becomes cold plasma: ionised air at skin temperature.
- 02It works at the surfaceNothing is applied and nothing is absorbed. No heat, no light, no ingredients.
- 03Minutes, then you’re done1–2 minutes per area, 3–5 times a week. No downtime, nothing to wash off.
Minutes. Not a routine.
- 01Clean, dry skinNothing on the skin first.
- 02Glide slowly1–2 minutes per area, light pressure.
- 033–5 times a weekThen your usual products, if you use any.
5–8 minutes a session. No gels, no cartridges, nothing to buy alongside it.
Same device. One difference.
- Standard plasma output
- The model most customers choose
- 3× the plasma output
- Same device, same size, same head
Trial, warranty and shipping are identical for both.
Technology, not another product.
Keep any prescribed treatment unless your clinician says otherwise.
One price. Then nothing.
No refills, no cartridges, no subscription. Put your own number in.
- 1 year
- —
- 3 years
- —
- Nova, once
- $240.00
Everything you need. Nothing to re-buy.
- 1 × Nova device
- 1 × Charging cable
- 1 × Treatment head
- 1 × Fitted presentation case
- 1 × Quick-start guide
- 1 × Warranty card
- 1 × 60-Day Skin Trial card
No serums to repurchase. No refills. No subscription. The device is the routine.

The 60-Day Skin Trial.
Use Nova on your worst skin for 60 days. Opened, used, doesn’t matter — if your skin doesn’t change, send it back. Full refund, no restocking fee, no interrogation.
And a US$50 gift card for your time.
Before you decide.
Rosacea
I’ve tried metronidazole, azelaic acid, even IPL. Why would this be different?
Because it is not another cream and not another light. Nothing is applied, nothing is absorbed and there is no heat — so it does not sting, and it is not doing what IPL or laser do. Keep whatever your clinician has prescribed; Nova runs alongside it, and you have 60 days to see the difference on your own skin.
My skin reacts to everything. Will this trigger a flare?
There is nothing in a session to react to: no heat, no chemicals, no actives. In the published rosacea pilot — 12 people, six weeks — treatment was tolerated throughout. Start on one area; if anything stings, stop and email us. You are covered by the 60-day trial either way.
Is there rosacea-specific research?
Yes. A split-face pilot recorded fewer inflammatory lesions and smaller red areas on the treated side, and a research letter recorded lower Demodex mite counts. Both are summarised in the research section above, with the journal and the study details on each card.
Using Nova
How do I use it?
Clean, dry skin. Glide the head slowly over each area with light pressure: 1–2 minutes per area, 5–8 minutes a session, 3–5 sessions a week. Then your usual products. Nothing to buy alongside it.
Does it hurt or burn?
No. Nova is non-thermal — the plasma runs at skin temperature. It is not a plasma pen. Some people feel a mild tingle during a session.
Can I keep using my skincare or prescription?
Yes. Nova first, on clean dry skin, then your usual products. Don’t stop a prescribed treatment without asking the clinician who prescribed it.
How do I look after it?
Keep the head clean and dry between sessions and charge it with the included cable. Anything else: email info@sub-zero.shop — a person replies within 1–2 business days.
Suitability & expectations
Who should check with a doctor first?
Nova is for adults. If you’re pregnant, have a pacemaker or implanted device, epilepsy, a skin-cancer history or an open wound, ask your clinician before using any cold-plasma device. Nova doesn’t diagnose anything and isn’t medical advice.
How long before I know if it’s working?
Think in weeks, not days. The published trials ran 4–12 weeks, which is why the trial is 60 days and not 14. Take a photo on day 0 in the same light — that is how you will see it.
Is there research, or just before-and-afters?
Both. The published research on cold plasma and skin is summarised in plain English further up this page, with the journal and the study details behind every card, and the before-and-afters are from customers using Nova at home.
Nova vs Nova Max
What’s the difference between Nova and Nova Max?
Same device, same technology, same head. Nova Max puts out three times the plasma power, so sessions are quicker and it suits larger or more stubborn areas. Trial, warranty and shipping are identical on both.
Buying, trial & payment
What if it isn’t right for me?
Email info@sub-zero.shop with your order number within 60 days of delivery. Opened and used is fine; send it back complete and the full purchase price goes back to your card, no restocking fee. You cover return postage. If your skin hasn’t changed, we also send a US$50 gift card to a retailer of your choice. The full refund policy is in the site footer.
What’s in the box?
Nova device, charging cable and treatment head in the fitted case, plus the quick-start guide, warranty card and 60-day trial card. No consumables, refills or cartridges, ever.
What does the lifetime warranty cover?
Manufacturing faults, for the life of the device, for the original buyer — we repair or replace it. Accidental damage, misuse and cosmetic wear aren’t covered.
Shipping and delivery?
Free worldwide, duties and customs covered. Dispatched in 1–2 business days; delivery 7–14 business days internationally, 3–7 within Australia. Tracking arrives by email.
How can I pay?
Card, Shop Pay and the wallets your device supports. One payment, no subscription. HSA/FSA cards work at checkout — Truemed handles the eligibility paperwork, and a refund under the trial goes back to the same card.
What real customers say.
27 reviews, rosacea and redness first.
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I’ve had rosacea for years (mainly flushing + background redness) and it used to stop me doing normal things like going out in the sun or even having a drink without my face flaring up. This hasn’t “cured” it, but my skin is way less reactive now. I can actually go out without constantly thinking about it. That’s been a big shift for me.
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Wasn’t expecting much at first, but after a couple weeks I noticed the redness on my cheeks wasn’t as intense. More importantly, I’m not getting those sudden flare-ups as often. I can work out again and not feel like my face is on fire after. Still early but definitely moving in the right direction.
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I’ve always had to be careful with everything — heat, skincare, even certain foods. Since using this, my skin feels a lot more stable. It’s not perfect, but I’m not constantly managing it anymore. I’ve been able to simplify my routine a lot and just live a bit more normally.
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Tried laser and a bunch of prescription stuff before this. Results were always mixed and sometimes made things worse. This feels a lot more controlled. My redness is still there but it doesn’t escalate like it used to. I can go out, be social, not stress about it constantly. For me that’s a big win.
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I was so done with influencer skincare and was skeptical of anything new. The fact that it doesn’t use any ingredients is what actually made me try it. I’ve been using it for only 3 weeks and my skin hasn’t had a single angry flare-up and has acc improved. This is the first thing I’ve tried that didn’t make things worse and acc did something. So yeah, thumbs up from me.
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As a doctor I used to stress every night about which products to use and layer — toner, serum, creams. My skin still broke out lol. Nova removed all my second-guessing. I just use it and go straight to bed. It’s become the easiest and best part of my routine.
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I was buying $300 worth of skincare every two months and still breaking out (not a good look in my profession lmao). Now I use Nova daily and haven’t touched a single treatment cream in weeks. First time I feel like my skin is stable. Recommended it to all my clients aswell!!
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I’ve probably spent thousands on skincare. I’m not exaggerating. You name it, I’ve used it for sure. None of it ever really worked long term tho. Nova is the first thing that actually made my skin feel stable and made it consistently clear and smooth. After about 3 weeks, my breakouts and flare-ups have stopped and my redness went down massively. Love Nova, love Sub-Zero.
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I’ve actually stopped buying skincare. Nova is different. Within a few weeks of using Nova my breakouts stopped showing up randomly and my skin actually feels stable for the first time in years. I genuinely wish I found this sooner. COULD NOT RECOMMEND SOMETHING MORE!!!
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I’ve spent years cycling through moisturisers, steroid creams, and “eczema-safe” products. What surprised me about Nova was how well my skin tolerated it. Less redness, less irritation, and fewer nights lying awake scratching.
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The itching was honestly affecting my sleep more than the appearance of my eczema. After a few weeks with Nova, I noticed I wasn’t thinking about my skin nearly as much. The flare-ups still happen, but they don’t seem to escalate the same way they used to.
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I’ve had eczema on and off since I was a teenager. The itching and flare-ups were the hardest part. Nova didn’t make it disappear overnight, but my skin became noticeably calmer and I wasn’t constantly reaching for creams throughout the day.
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My eczema would always flare up when I was stressed or the weather changed. Since using Nova, the patches on my arms and neck seem much less angry and irritated. The biggest difference is that my skin feels more stable overall.
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I bought Nova hoping it would help calm the constant cycle of inflammation. My eczema hasn’t magically vanished, but my skin looks less reactive, feels less irritated, and recovers faster when I do have a flare-up. It’s become one of the few things in my routine that I genuinely don’t want to be without.
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The red marks after my breakouts are finally fading instead of hanging around for months.
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I bought NOVA for acne, but the biggest surprise has been how much faster the leftover redness clears.
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My skin isn’t perfect, but the red patches from old pimples are so much less noticeable now.
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PIE has honestly bothered me more than the acne itself. After about six weeks, my cheeks look much more even in natural light.
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The difference in photos is what convinced me. Same lighting, same angle, way less redness.
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I still get the occasional spot, but it doesn’t leave that bright red mark for nearly as long.
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Foundation used to be the only thing that made my skin look even. I’m using a lot less now.
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I was expecting this to help active breakouts. Didn’t expect my old red marks to improve this much too.
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Very gradual, but definitely noticeable. My PIE looks softer every month.
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Those stubborn red marks on my cheeks have faded more in two months than they did in the six months before.
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My acne was mostly under control, but the red marks made it look like I was still breaking out constantly. NOVA has made a huge difference there.
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No dramatic overnight change. Just steadily less redness and a much more even-looking complexion.
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For me, the best result is that old breakouts actually look old now instead of staying bright red forever.


