Ozone facial steamers combine ordinary water vapor with ozone, a form of oxygen made up of three oxygen atoms and represented by the chemical formula O₃. Unlike the steam itself, ozone is a gas. In these devices, an ozone-generating component adds ozone to the steam or the airflow around it.
Ozone steamers are often sold on cleansing or antibacterial claims, but those claims need to be separated from what is actually established about ozone and skin. Knowing what ozone is and how the feature works can help you decide whether it matters for your routine.
MEDICAL DISCLAIMER: This article is for informational purposes only and does not constitute medical advice. Always consult with a dermatologist or other qualified skincare professional before starting any new skincare practice, especially if you have sensitive skin, rosacea, eczema, or other skin conditions. Individual results may vary.
AFFILIATE DISCLOSURE: This article contains affiliate links, which means we may earn a commission if you make a purchase through these links at no additional cost to you. Our recommendations are based on real reviews, scientific research, product testing, and manufacturer-verified specifications. We only feature tools and products we genuinely believe will deliver results.
Quick Answer: What Is Ozone in a Facial Steamer?
Ozone is O₃, a reactive form of oxygen containing three oxygen atoms. In an ozone facial steamer, an ozone-generating component produces ozone that is used alongside the device’s warm water vapor. The ozone function is different from the steam itself: steam is water vapor, while ozone is a separate gas.
Ozone is highly reactive and can irritate the respiratory system, so treat the ozone function with caution: follow the manufacturer’s instructions, use appropriate ventilation and avoid breathing in the output.
What Is Ozone?
Ozone is a reactive form of oxygen made up of three oxygen atoms, represented by the chemical formula O₃.
Ozone Is O₃
The oxygen you breathe is O₂: two oxygen atoms bonded together. Ozone has a third oxygen atom, and that small change gives it very different properties.
- O₂ (oxygen): stable, and what your body needs to breathe
- O₃ (ozone): unstable and highly reactive, so it readily reacts with other substances
That reactivity is why ozone is used for disinfection in some industries, and also why it can irritate the lungs. Because it breaks down over time, ozone-generating devices typically produce it while they run.
How Does Ozone Work in a Facial Steamer?
The exact mechanism varies by device, but ozone facial steamers generally combine conventional steam generation with an ozone-generating function. The basic sequence looks like this:
- Water reservoir: you fill the tank with water.
- Heating element: the water is heated and turns into warm vapor.
- Ozone generator: a separate component produces O₃.
- Combined output: ozone is introduced into the steam or airflow.
- Facial area: the warm, ozone-containing output is directed toward your face.
The U.S. Environmental Protection Agency (EPA) explains that ozone can be generated using technologies such as UV light or an electrical discharge. Some facial steamer listings describe a UV lamp as the ozone source. The method varies by device, so check the manufacturer’s specifications for the model you are considering. For a step-by-step look at the process, see how ozone facial steaming works.
One point matters most here: the device does not turn water into ozone. The steam comes from heated water. The ozone comes from a separate process.
Is Ozone the Same as Steam?
No. Ozone is not a special type of water vapor.
| Feature | Steam | Ozone |
| What it is | Water vapor | O₃ gas |
| Chemical composition | H₂O | O₃ |
| Main source in the device | Heated water | Ozone generator |
| Physical state | Vapor/gas | Gas |
| Main function in the steamer | Provides warm moisture | Adds an ozone function |
| Same as ordinary steam? | Yes | No |
| Main safety consideration | Heat exposure | Ozone exposure |
Ozone is not a special type of water vapor. It is a separate gas that may be generated and used alongside the steam.
So when a product describes itself as an “ozone steamer,” the ozone refers to an additional function, not a stronger or fundamentally different type of steam.
Why Do Facial Steamers Add Ozone?
Ozone features tend to be positioned around a few angles:
- Antimicrobial positioning: ozone’s disinfecting uses in other settings feature in product marketing.
- Cleansing claims: listings often pair ozone with phrases like “deep cleaning.”
- Professional-style models: ozone is a feature included in some salon-style steamers.
- Differentiation: an ozone switch sets a model apart from standard steamers.
These are selling points, not evidence of a skincare result. Listings often combine “ozone,” “nano ionic” and “deep cleaning,” but none of those labels show that the device improves skin.
Does Ozone Kill Bacteria?
Ozone is a powerful oxidizing agent. It is used to disinfect water and surfaces in some healthcare and industrial settings because it can damage the cell membranes and internal components of bacteria, viruses and fungi.
That does not carry over automatically to a facial steamer, because disinfection relies on controlled concentrations and contact times. Ozone has antimicrobial properties in certain controlled applications, but that does not establish that an ozone facial steamer provides a clinically meaningful acne treatment or antibacterial effect on facial skin.
Does Ozone in a Facial Steamer Benefit Your Skin?
Ozone facial steamers are often marketed around cleansing and antimicrobial benefits, but the general properties of ozone are not evidence that a consumer steamer improves skin. The American Academy of Dermatology’s 2024 acne guidelines, for example, do not include ozone among their recommended acne treatments.
For a closer look at what the evidence does and doesn’t support, see our guide to ozone facial steamer benefits. If you want specific marketing claims checked against the evidence, our breakdown of common ozone facial steaming claims goes through them one by one.
Want to learn more about what ozone facial steamers can and cannot do?
Read Our Guide to Ozone Facial Steamer Benefits
Ozone Facial Steamer vs. Regular Facial Steamer
| Feature | Regular Facial Steamer | Ozone Facial Steamer |
| Warm steam | Yes | Yes |
| Water vapor | Yes | Yes |
| Ozone generation | No | Yes |
| O₃ exposure | No | Yes |
| Additional ozone function | No | Yes |
| Heat considerations | Yes | Yes |
| Ventilation considerations | Mainly heat and room conditions | Adds an ozone exposure consideration |
| Main difference | Steam only | Steam plus an ozone function |
The defining difference is the addition of ozone generation, not a fundamentally different type of steam. For a fuller side-by-side, see ozone facial steamers vs. regular steamers.
Is Ozone in a Facial Steamer Safe?
There is no blanket yes or no answer. The EPA identifies ozone as a lung irritant. Its listed effects include throat irritation, coughing, chest pain, shortness of breath and worsening of asthma. The EPA also notes that risk rises with higher concentrations and longer exposure.
How much ozone you are exposed to depends on the device’s output, how long you use it, how close you sit and the room. Ozone output isn’t always listed, and general ozone exposure limits, such as those summarized by the EPA, were not developed as operating limits for facial steamers. Ventilation can help reduce ozone concentrations, but it does not eliminate the exposure.
What matters for an ozone steamer:
- Device output: ozone output differs between models and isn’t always listed.
- Ventilation: follow the manufacturer’s ventilation instructions and avoid small, enclosed, poorly ventilated spaces.
- Breathing: don’t deliberately inhale the output.
- Instructions: follow the directions for distance, session length and the ozone switch, and leave the ozone off if you don’t need it.
- Health conditions: the EPA notes that people with asthma and other lung conditions are more vulnerable to ozone. Talk to a healthcare professional, and consider a steamer without an ozone function.
Ozone should not be treated as harmless simply because it is used in a skincare device. Our guide to ozone steam safety covers the risks and precautions in more detail.
Does Ozone Facial Steam Penetrate the Skin?
Don’t assume it does. “Penetrates deeper” is a common marketing phrase, but it needs evidence behind it.
One laboratory study in hairless mice points the other way. Mice exposed to high ozone levels showed oxidative damage in the skin’s outermost layer, the stratum corneum. The researchers concluded that ozone itself was unlikely to pass through that layer, and that stress responses in deeper skin were probably indirect. It was a high-exposure mouse study, not a facial steamer study, so it can’t show what happens during home steaming. Even so, it gives no support to the idea of ozone traveling deep into the skin, and skin contact with a gas is not proof of penetration. We look at the “penetrates deeper” claim in more detail in our breakdown of common ozone facial steaming claims.
Ozone vs. Nano Steam
Ozone and nano steam are sometimes mentioned together, but they are different technologies.
| Feature | Ozone Steam | Nano Steam |
| Main technology | Ozone generation | Fine/nano mist generation |
| Primary output | O₃ gas | Fine water mist |
| Main marketing angle | Cleansing/antimicrobial | Fine mist/hydration |
| Main consideration | Ozone exposure | Mist technology |
Ozone refers to O₃ gas. “Nano steam” is a product term rather than a scientific category, generally used for a very fine water mist. Some devices carry both labels. Kingsteam, for example, markets its model as an “ozone nano ionic” steamer, so check which functions a device actually has.
How to Tell If a Facial Steamer Actually Uses Ozone
Look for:
- “Ozone” named in the specifications, not just in the product title
- A dedicated ozone switch separate from the steam switch
- An ozone indicator light
- Manufacturer documentation that explains the ozone function
- Safety and ventilation instructions specific to ozone
Don’t assume “professional facial steamer” means ozone steamer. Some professional models include ozone and others don’t, and some ozone steamers let you switch the ozone off.
Examples of Ozone and Non-Ozone Facial Steamers
Want to see what an ozone facial steamer looks like in practice? These three models show how the technology is used, and how a steamer without an ozone function compares.
| Product | Type | Key Technology / Feature | Why Consider It | Best For | Link |
| Kingsteam Ozone Facial Steamer | Ozone facial steamer | Ozone + hot steam + extendable arm | Real-world example of a steamer with a dedicated ozone switch | Readers researching ozone technology | Check Price on Amazon |
| TASALON Professional 2-in-1 Facial Steamer (Model JY-200D) | Professional ozone steamer | Ozone + 5X magnifying lamp | Shows how ozone is combined with salon-style features | Estheticians and salon users | Check Price on Amazon |
| Pure Daily Care NanoSteamer | Nano facial steamer | Nano-ionic/fine mist technology | Shows that nano steam is a different technology from ozone | Readers comparing ozone vs nano | Check Price on Amazon |
Kingsteam Ozone Facial Steamer
A compact steamer (model JY-15A) with a 400ml water tank rated for about 40 minutes of steam, an extendable arm and a 360° rotating nozzle. The ozone function has its own switch, so it can be used with or without ozone. The listing also describes automatic shut-off when the water runs low or the unit overheats.
TASALON Professional 2-in-1 Facial Steamer (Model JY-200D)
A salon-style unit that pairs an ozone steamer with a 5-diopter (5X) magnifying LED lamp on a foldable scissor arm, set on a four-leg wheeled stand with adjustable height. The listing describes what it calls “ionic ozone” mixed with the steam, plus a thermal protector and automatic shut-off. It doesn’t explain how the ozone function is switched on and off, so check the manual before using it. It shows how ozone is built into larger professional equipment.
Pure Daily Care NanoSteamer
A nano facial steamer that pairs a heating element with an ultrasonic vaporizer to create a fine water mist, with no ozone function listed by the manufacturer. It has a 200ml tank and shuts off automatically when the water runs out.
Specifications can change between listings. Check the current Amazon listing and manufacturer instructions before buying.
Frequently Asked Questions
What is ozone in a facial steamer?
What does ozone do in a facial steamer?
Is ozone the same as steam?
What is O₃?
How is ozone produced in a facial steamer?
Is ozone steam safe for your face?
Does ozone kill bacteria on skin?
Does ozone penetrate the skin?
Is ozone better than regular facial steam?
What is the difference between ozone and nano steam?
Do all facial steamers use ozone?
Is an ozone facial steamer worth using?
So, What Is Ozone in a Facial Steamer?
Ozone in a facial steamer is O₃, a reactive form of oxygen produced by an ozone-generating component and used alongside warm water vapor. It is not simply “stronger steam” or a different type of water vapor.
Ozone steamers are marketed for extra cleansing and antimicrobial properties, but those claims should not be read as proven skincare benefits. Because ozone can irritate the respiratory system, follow the device instructions carefully and avoid unnecessary ozone exposure.
For the potential benefits, limitations and safety considerations in more detail, see our complete guide.
References
U.S. Environmental Protection Agency. Ozone Generators that are Sold as Air Cleaners. https://www.epa.gov/indoor-air-quality-iaq/ozone-generators-are-sold-air-cleaners (Used for: ozone as a lung irritant, health effects, risk factors. Scope: air-cleaning devices, not facial steamers.)
U.S. Environmental Protection Agency. Guide to Air Cleaners in the Home (PDF). https://www.epa.gov/sites/default/files/2014-07/documents/aircleaners.pdf (Used for: ozone generators producing ozone with UV light or an electrical discharge. Scope: air-cleaning devices.)
Artasensi A, Mazzotta S, Fumagalli L. Back to Basics: Choosing the Appropriate Surface Disinfectant. Antibiotics. 2021;10(6):613. https://doi.org/10.3390/antibiotics10060613 (Used for: ozone’s oxidizing and antimicrobial mechanism, and its breakdown into oxygen. Scope: water and surface disinfection.)
Valacchi G, et al. Ozone exposure activates oxidative stress responses in murine skin. Toxicology. 2002;179(1-2):163-170. https://doi.org/10.1016/S0300-483X(02)00240-8 (Used for: ozone reacting mainly in the stratum corneum. Scope: mouse study, high ozone levels.)
Reynolds RV, et al. Guidelines of care for the management of acne vulgaris. Journal of the American Academy of Dermatology. 2024. https://doi.org/10.1016/j.jaad.2023.12.017 (Used for: ozone not listed among recommended acne treatments.)
