Spray tans are generally considered safer than UV tanning, though inhaling the active ingredient DHA during application carries potential.
Walk into any tanning salon and you might hear the same pitch: spray tans are totally safe because there’s no UV. It sounds reasonable — ultraviolet radiation is a known carcinogen, so skipping it feels like a clean win. That logic makes spray tans feel risk-free, which leads many people to skip basic precautions.
The real picture is more nuanced. Spray tans avoid the cancer risks tied to UV exposure, which is a significant advantage. But the active chemical, dihydroxyacetone (DHA), isn’t approved for inhalation, and inhaling the mist may irritate airways or affect cells in ways that are still being studied. This article separates the known benefits from the lingering questions so you can make an informed choice.
What Exactly Is In A Spray Tan?
The ingredient that gives spray tans their color is dihydroxyacetone, or DHA. It’s a simple sugar-derived chemical that reacts with amino acids on the outer layer of dead skin cells. The reaction produces a temporary brown stain that fades as your skin naturally exfoliates over several days — typically lasting five to seven days depending on your skin’s turnover rate.
DHA has been used in cosmetic products for decades, and the FDA has approved it for external application on the skin. The catch is that the agency has not approved DHA for inhalation or for contact with mucous membranes — the eyes, lips, nose, or mouth. When a spray tan is applied as an aerosol mist, those areas can be exposed despite your best efforts to avoid them. This regulatory gap is the central safety question around spray tans.
How DHA interacts with skin cells
Once DHA contacts the skin, it binds to amino acids in the outermost layer (the stratum corneum). The browning effect is purely cosmetic and doesn’t involve melanin production or any UV-related process. That’s why spray tans don’t trigger DNA damage from radiation — the color change happens through a chemical reaction, not through cellular injury. However, laboratory studies have shown that DHA can alter cell growth patterns in cultured skin samples, suggesting that its biological effects may go deeper than surface staining.
Why The “Safe Tan” Assumption Is Tricky
The central appeal of spray tans is obvious: no ultraviolet radiation, no melanoma risk from the tanning itself. That part is well-supported. The Skin Cancer Foundation, Cleveland Clinic, and Mayo Clinic all endorse spray tans as far safer than indoor tanning beds or sunbathing. But “safer” doesn’t mean “risk-free,” and several concerns complicate the picture.
- Inhalation of DHA mist: The aerosol created during a spray tan can be inhaled into the lungs. DHA is not approved for inhalation, and a 2018 nursing study found that there is no clear safe exposure level for mucous membranes during application. People with asthma or other respiratory conditions may be especially sensitive.
- Skin irritation and dryness: The chemicals in spray tan solutions can cause contact dermatitis or exacerbate existing skin conditions like eczema. Dryness after application is common, especially if you have naturally sensitive skin.
- Lack of long-term human data: While DHA has been studied in lab settings, large-scale human trials on the effects of inhaled DHA are absent. Most safety conclusions come from animal studies, short-term cosmetic use data, or inference rather than direct population evidence.
- Unregulated application practices: Spray tan salons vary widely in ventilation, protective gear availability, and technician training. There is no federal standard requiring nasal filters, goggles, or masks during application — meaning exposure levels depend heavily on where you go.
- False sense of sun protection: A spray tan provides zero SPF. People sometimes assume the bronzed color offers some UV protection, which can lead to longer sun exposure without sunscreen — actually increasing skin cancer risk rather than reducing it.
Spray Tans vs. UV Tanning: The Risk Comparison
Understanding the trade-offs between spray tans and UV tanning helps put the “unhealthy” question in perspective. The World Health Organization classifies tanning beds as Group 1 carcinogens — meaning they are known to cause cancer in humans. Spray tans carry no such classification. The difference in cancer risk is stark. A single indoor tanning session is linked to a 75% increased melanoma risk, according to the Skin Cancer Foundation, while spray tans don’t expose skin to UV at all.
| Factor | Spray Tan | UV Tanning (Beds / Sun) |
|---|---|---|
| Carcinogen classification | None (no radiation) | Group 1 (WHO) — known human carcinogen |
| Melanoma risk increase | Not linked to risk from tanning itself | 75% higher with first session (Skin Cancer Foundation) |
| DNA damage from radiation | None | Direct damage to skin cell DNA |
| Premature skin aging | Minimal (chemical stain only) | Collagen breakdown, wrinkles, sunspots |
| Primary safety concern | DHA inhalation (unregulated exposure) | Cancer, burns, photoaging |
The table makes one thing clear: if your primary goal is avoiding UV radiation, spray tans are the better choice. But the inhalation risk is a different category of concern — one that UV tanning doesn’t share. For frequent users, the trade-off between radiation risk and chemical inhalation risk becomes a personal calculation that depends on your respiratory health and how careful the application is.
How To Make A Spray Tan Safer For Yourself
If you choose to get a spray tan, several steps can reduce the likelihood of inhaling DHA mist or irritating your skin. These precautions are recommended by dermatologists and organizations like the Skin Cancer Foundation and Cleveland Clinic. None of them eliminate risk entirely, but they shift the balance further toward safety.
- Hold your breath during the spray: Exhale before the technician starts spraying, hold until they finish the pass, then turn your face away before inhaling. This simple technique dramatically reduces the amount of mist you breathe in.
- Wear protective gear: Request nose plugs, disposable goggles, and a surgical mask. Many salons offer these, but you may need to ask. Sealing your lips tightly or covering them with a barrier balm also helps.
- Opt for lotion or cream self-tanners instead: Topical products eliminate inhalation risk entirely because there is no aerosol mist. The active ingredient is the same DHA, but applied by hand rather than sprayed into the air.
- Choose a well-ventilated salon or outdoor application: Fresh air disperses the mist faster, reducing the concentration of DHA particles you might inhale. Avoid small, enclosed spray booths with limited airflow.
- Use a barrier cream around eyes, nose, and lips before the tan: A thin layer of petroleum jelly or a thick moisturizer creates a physical barrier that prevents DHA from contacting mucous membranes.
Who Should Be Extra Cautious About Spray Tans?
Certain groups face higher potential risk from spray tan inhalation. If any of these situations apply to you, consider choosing a lotion-based self-tanner instead, or talk to a dermatologist before booking an appointment. The Skin Cancer Foundation’s position is that spray tans are a safer alternative to UV tanning, but that recommendation comes with the caveat that individual health factors matter.
| Group | Reason For Caution |
|---|---|
| People with asthma or COPD | DHA mist can trigger airway irritation or bronchospasm; inhaled irritants are especially problematic for reactive airways. |
| Pregnant or breastfeeding individuals | No safety studies exist for inhaled DHA during pregnancy; the FDA’s lack of inhalation approval raises unknowns for fetal exposure. |
| Those with eczema, psoriasis, or very sensitive skin | The DHA solution, along with other chemicals like alcohol or preservatives, may cause contact dermatitis or worsen existing flares. |
| Frequent spray tan users (weekly or more) | Repeated inhalation of any unapproved substance increases cumulative exposure; respiratory irritation may build over time rather than appearing acutely. |
The Mayo Clinic’s position is that when used as directed on the skin, sunless tanning products are generally considered safe compared to sunbathing. The qualifier “on the skin” matters — spray application changes the route of exposure from dermal (safe) to inhalation (uncertain). For most people, an occasional spray tan with protective measures is unlikely to cause harm, but the frequency and technique matter.
Lotions vs. sprays: which is safer?
Topical self-tanning lotions and creams remove the inhalation concern entirely because there is no mist. The DHA stays where you apply it — on the skin — and you control the coverage. Many dermatologists consider lotions the safest option for anyone who wants a UV-free tan without breathing in chemicals. If you’re concerned about uneven application, modern mousse-based formulas with a mitt can produce results very similar to a spray tan without the aerosol risk.
The Bottom Line
Spray tans are not unhealthy in the same way UV tanning is unhealthy — they don’t cause DNA damage or raise melanoma risk. The main concern is breathing in DHA mist, which the FDA has not approved for inhalation and which may irritate airways or affect cells in ways still being studied.
For most people, taking basic precautions like holding your breath, wearing protective gear, and choosing a well-ventilated salon keeps the risk low. If you have asthma, sensitive skin, or are pregnant, a lotion-based self-tanner may be the smarter choice.
A board-certified dermatologist can help you weigh your personal risk factors — especially if you have a history of respiratory issues or skin sensitivity that makes the standard spray tan approach feel uncertain.
References & Sources
- Cleveland Clinic. “Are Spray Tans Safe” The Skin Cancer Foundation reports a 75% increased risk of developing life-threatening melanoma from just one indoor tanning session.
- Skin Cancer Foundation. “Spray Dont Bake the Skin Cancer Foundation Suggests Indoor Tanning Alternatives for Young Women This Spring” Spray tans are considered a safer alternative to UV tanning because they do not involve exposure to ultraviolet radiation.