Do Spray Tans Cause Cancer? Understanding DHA Safety

Current evidence has not shown that spray tans cause cancer when dihydroxyacetone (DHA) is applied to intact skin as directed. The main practical concern is limiting exposure to the spray mist, particularly inhalation and contact with the eyes, lips, and other mucous membranes.

Do spray tans cause cancer?

For most people, using a DHA-based spray tan occasionally and according to product directions is unlikely to be harmful. Current evidence has not established that spray tans cause cancer when the active ingredient, dihydroxyacetone (DHA), is used externally on intact skin. However, research on repeated inhalation of spray-tan mist is limited, which is why sensible precautions are important.

A spray tan is not the same as tanning in the sun or using a tanning bed. Ultraviolet (UV) exposure from sunlight and indoor tanning devices can damage skin-cell DNA and is a well-established cause of skin cancer. DHA products create temporary surface color without UV radiation, but they do not provide protection against sunburn or skin cancer.

The safest approach is to choose reputable products, follow label instructions, avoid breathing in aerosolized product, and use the protective equipment offered in spray booths. People with persistent respiratory symptoms, sensitive skin, or an active skin condition may prefer to discuss use with a healthcare professional first.

What spray tans contain and how they work

Most sunless tanning products use DHA, a sugar-derived chemical that reacts with amino acids in the dead cells of the outer skin layer. This reaction produces brown-colored compounds called melanoidins. The color generally develops over several hours and fades as the outer skin cells naturally shed.

When used on the skin, DHA is intended to remain in the superficial layer rather than reach living tissue deeper in the body. This is an important reason that topical self-tanners are considered different from substances that are absorbed into the bloodstream or from UV tanning, which can directly damage living skin cells.

Spray tans may also contain moisturizers, fragrances, preservatives, bronzers, and botanical extracts. These added ingredients can occasionally cause irritation or allergic contact dermatitis, especially in people with eczema, fragrance sensitivity, or a history of cosmetic reactions. A patch test can be helpful when trying a new product.

Some products contain a temporary bronzer that rinses off, while DHA produces the longer-lasting color. Neither type changes a person’s natural skin response to sunlight. Daily broad-spectrum sunscreen, protective clothing, and shade are still needed outdoors.

What the evidence says about cancer risk

Regulatory and public-health guidance generally considers DHA safe for external use on the skin when it is used as intended. Laboratory studies have raised questions about what might happen at high exposures or when DHA is inhaled, swallowed, or applied to areas where it can be more readily absorbed. These findings do not demonstrate that ordinary topical spray tanning causes cancer in people.

The key uncertainty relates to aerosol exposure. A spray booth creates a fine mist that may be breathed in or contact the eyes, nose, mouth, or lips. There is not enough long-term human research to define the health effects of frequent inhalation. Therefore, avoiding these routes of exposure is a precaution rather than evidence that cancer is known to occur from spray tanning.

UV tanning, by contrast, has a clear and substantial health risk. Sunbeds and deliberate tanning from sunlight expose the skin to UV radiation, which contributes to premature skin aging and increases the risk of skin cancers. For people who want a tanned appearance, a properly used sunless product is generally a safer cosmetic alternative to UV tanning.

It is also important not to confuse a tanned-looking complexion with skin protection. Some research suggests that DHA-treated skin may be more vulnerable to oxidative effects immediately after application, so avoiding intense sun exposure after tanning and using sunscreen consistently is especially sensible.

Using spray tans more safely

Before a spray tan, the person should check that the salon uses products intended for cosmetic use and provides suitable protective measures. They should ask for eye protection, nose filters or plugs when available, lip balm or a barrier product for the lips, and disposable garments if preferred. During application, keeping the mouth closed and avoiding deep breaths can further reduce accidental inhalation.

Home spray products should be used in a well-ventilated area. They should not be sprayed toward the face or used in a small enclosed space. Creams, mousses, and lotions can be practical alternatives for people who would rather avoid airborne product, although these should still be kept away from the eyes, lips, nostrils, and broken skin.

• Do not apply self-tanner to cuts, sunburned skin, rashes, or infected areas.
• Wash hands after applying a tanning product and avoid accidental transfer to the eyes or mouth.
• Stop using the product if burning, itching, swelling, wheezing, or a widespread rash develops.
• Use broad-spectrum sunscreen every day on exposed skin; spray tan color is not sunscreen.

Anyone with asthma, chronic lung disease, or a tendency toward strong fragrance or cosmetic reactions may wish to choose a non-spray formulation or seek individualized advice from a clinician.

Skin changes that deserve attention

Most temporary color variation after a spray tan is simply uneven product development, dry patches, or normal fading. These changes usually improve with gentle washing and time. Mild irritation can also occur from fragrance, preservatives, exfoliation, or rubbing during application.

However, self-tanner can make it harder to notice the natural color of a mole or other skin mark for a short time. It should never be used to cover a changing lesion or to delay a skin check. A person should remain familiar with their skin and take note of spots that are new, growing, irregular, itchy, painful, bleeding, crusting, or not healing.

For pigmented spots, clinicians often use the ABCDE guide: asymmetry, irregular border, uneven color, diameter that is increasing, and evolution or change over time. These features do not always mean cancer, but they are reasons to arrange a medical assessment. Learn more about skin cancer warning signs and the importance of timely evaluation.

People at higher risk of skin cancer, including those with a personal or family history, many atypical moles, very fair skin, or substantial past UV exposure, may benefit from regular professional skin examinations as advised by their doctor.

When to seek medical care

Medical review is appropriate if a person develops trouble breathing, persistent coughing, wheezing, facial swelling, hives, severe burning, blistering, or a widespread rash after a spray tan. Urgent assessment is needed for significant breathing difficulty, swelling of the tongue or throat, or signs of a severe allergic reaction.

A doctor should also assess a mole or skin lesion that is new or changing, has more than one color, has an uneven edge, bleeds without clear injury, or does not heal. These signs are common reasons for review and often have non-cancerous explanations, but they should not be diagnosed from appearance alone.

During an appointment, a clinician will ask about the timing of the change, product use, UV exposure, symptoms, personal and family history, and other relevant factors. They may examine the whole skin surface, use dermoscopy to inspect a lesion more closely, take clinical photographs for monitoring, or recommend a biopsy when needed to reach a diagnosis.

Acıbadem Health Point’s multidisciplinary specialists and JCI-accredited hospitals can assess concerning skin changes and provide appropriate diagnostic care for international patients.

Prevention: a broader approach to skin health

The most effective way to reduce preventable skin cancer risk is to limit UV exposure rather than relying on any tanning method. People can seek shade when UV levels are strong, wear protective clothing and a hat, use broad-spectrum sunscreen, and avoid tanning beds. These measures matter on cloudy days as well as sunny ones.

A spray tan can be part of a cosmetic routine for someone who wants color without intentional UV tanning, provided it is used carefully. It should be viewed as a colorant, not as a health product or a substitute for sun protection. Reapplying sunscreen after swimming, sweating, or towel drying remains necessary even when a person has a spray tan.

Regular self-checks can help people become familiar with their normal skin. Looking at hard-to-see areas with a mirror or asking a trusted person to help can be useful. If there is uncertainty about a spot, a qualified doctor or dermatologist can provide a more reliable assessment than online images or cosmetic camouflage.

Frequently asked questions