Most tanning bed rashes clear up within a few days to two weeks, depending on what’s causing them. A simple heat rash can fade in 24 hours, while a UV-triggered skin reaction typically resolves in one to three weeks. The key variable is the type of rash you’re dealing with, because tanning beds can irritate skin in several distinct ways, each with its own timeline.
UV-Triggered Rash (Polymorphous Light Eruption)
The most common tanning bed rash is a condition called polymorphous light eruption, or PMLE. It happens when your skin reacts to UV exposure it isn’t accustomed to, producing small red bumps, patches, or blisters on areas that were directly exposed. It’s especially common early in the season or if you haven’t tanned in a while.
PMLE symptoms typically last two to three days at their peak, then begin fading. Without any treatment, the rash generally clears completely within a few weeks. If you avoid further UV exposure, it often resolves within about one week. The rash tends to improve on its own as long as you give your skin a break from tanning beds and direct sunlight while it heals.
Heat Rash
Tanning beds generate significant heat in an enclosed space, which can trigger miliaria, commonly known as heat rash. This shows up as tiny red bumps or prickly, itchy patches, usually in areas where sweat gets trapped: the chest, back, and skin folds. Most cases resolve within a day or two once you move to a cooler environment and let your skin breathe. Wearing loose clothing and keeping the affected area cool and dry speeds this along. If your rash appeared immediately after your session and feels more prickly than painful, heat rash is the likely culprit, and it has the shortest recovery window of any tanning bed rash.
Folliculitis From Bacteria
Tanning beds that aren’t properly sanitized can harbor bacteria, particularly Pseudomonas aeruginosa. When these bacteria get into hair follicles, they cause folliculitis: small, red, pus-filled bumps that can look like acne. The bumps tend to appear within a day or two of your session and are often itchy or tender.
Folliculitis from contaminated surfaces generally clears up without treatment in 5 to 10 days. If the bumps persist beyond 10 days, or if you notice increasing redness, warmth, swelling, or drainage, it’s worth having a healthcare provider take a look. A bacterial infection that isn’t resolving on its own may need a prescription to fully clear.
Fungal Patches and Uneven Skin Tone
Tanning can also make a fungal skin condition called tinea versicolor more visible. This isn’t technically a rash caused by the tanning bed itself. Instead, UV exposure darkens the surrounding skin while patches affected by the fungus stay lighter (or darker), creating a blotchy, uneven appearance. The patches don’t usually itch much, which helps distinguish them from other types of tanning rashes.
The fungal infection itself can be treated with over-the-counter antifungal creams or shampoos, but even after the fungus is gone, the discolored patches take several weeks to months to blend back in with your normal skin tone. If you don’t see improvement within four weeks of starting treatment, a healthcare provider can recommend stronger options.
Dry Skin and Product Reactions
Sometimes the explanation is simpler than an infection or UV sensitivity. Dry skin is one of the most straightforward causes of a tanning bed rash. If your skin is already dehydrated going into a session, the UV lamps pull even more moisture from the top layer, leaving it irritated, flaky, and itchy. Tanning lotions, oils, and other products can also clog pores and trigger a contact reaction. These rashes typically fade within a few days once you moisturize and stop using the offending product.
How to Speed Up Healing
Regardless of the type, a few steps help any tanning bed rash resolve faster. Soaking the affected area in cool water for about 20 minutes calms inflammation and reduces itching. Adding a colloidal oatmeal bath product to the water provides extra soothing relief. Between soaks, keep the skin moisturized with a fragrance-free lotion and avoid tight clothing that traps heat against the rash.
The most important thing you can do is avoid further UV exposure until the rash has fully cleared. Going back into a tanning bed while your skin is still reacting will extend the timeline and can make the rash significantly worse. Give yourself at least a day or two of no sun or tanning even after the rash fades before considering another session.
Preventing Future Rashes
Wipe down all tanning bed surfaces with a hypoallergenic wipe before each session. This reduces bacterial and fungal exposure from previous users. Choose a salon that visibly cleans its equipment between clients. Moisturize your skin in the hours before your session so you aren’t starting with dry, vulnerable skin, but avoid heavy lotions or oils right before tanning, as these can clog pores and trigger breakouts.
If you’re prone to PMLE, shorter initial sessions give your skin a chance to build tolerance gradually rather than overwhelming it with intense UV all at once. Spacing sessions further apart and avoiding outdoor sun exposure on the same day as a tanning session also reduces the risk of overexposure reactions.