Fitbit irritating your skin or causing a rash? Let’s fix it!

Fitbit Inspire HR band irritation and rash
I developed redness and irritation from my Fitbit Inspire HR after wearing it for 3 days non-stop on the same arm

Can your Fitbit cause skin irritation or rashes? Unfortunately, yes. Learn what I did to prevent my Fitbit from causing my skin to react.

As much as I love my Fitbit Inspire HR, I don’t like the rashes and skin irritations that the Fitbit band often causes. After struggling with this issue, I’ve learned a lot about how to keep your arms rash and irritation-free while still using your Fitbit every day (and every night for those that want the sleep tracking.)

So here’s what I discovered!

Quick checklist

myhealthyapple quick checklist icon

Try these quick remedies to prevent your Fitbit from irritating your skin

  • Wear your Fitbit loose so you can move it back and forth easily (but not up and down–that’s too loose!)
  • Periodically take your Fitbit off to let your skin breathe. Remove your band for at least twenty minutes each day to allow your skin to be unencumbered
  • Switch your Fitbit from one arm to the other at night or in the morning, so you never have it on an arm for more than 24 hours
  • Thoroughly clean and dry your Fitbit and your arm after sweating to remove any trapped bacteria
  • Try using a barrier cream moisturizer on your arm. These creams form a physical barrier between your skin and any irritants and help to protect your skin against excess moisture caused by sweat etc. Look for moisturizers and barrier creams that include lipids, glycerine, and ceramides
  • If you suspect that you are allergic to the wristband materials, usually silicone, try using a fabric, woven or leather band instead

Related reading

Why is my Fitbit causing skin irritation or rashes?

For most of us that get some kind of skin reaction, our Fitbits (particularly the bands) are causing irritant contact dermatitis (eczema.) When our Fitbits trap things like soap and sweat and then we put pressure or add some friction to the mix, our skin starts reacting immediately, causing redness and then inflammation.

There are also some of us that are actually allergic to some of the materials (usually metals like nickel) in the Fitbit itself. When someone is allergic to those materials, their immune system responds in what’s called allergic contact dermatitis. An allergic response usually takes a bit longer (several days) to develop than a simple contact dermatitis response.

You may notice the following on the skin where you wear your Fitbit

  • Redness
  • Swelling
  • A burning feeling
  • Bumps
  • Blisters
  • Rashes
  • Skin that appears scaly

How do I prevent my Fitbit from causing redness, rashes, and other skin irritations?

Okay, first let’s ask ourselves some questions. Often, just changing one behavior can make a world of difference to your skin’s health.

How tight are you wearing your Fitbit?

You’re more likely to get skin irritation if the band is too tight–so keep it comfortably loose.

The rule of thumb with Fitbits is to wear them a bit loose–usually loose than you think it should be. 

The preferred placement for your Fitbit is about two to three full fingers distance from your wrist. The best measure for this is your own fingers.

Although Fitbit suggests placing your Fitbit band a finger’s width above your wristbone when not exercising, we find that placing it 2-3 fingers distance works best!

wrist placement for the Fitbit
Regardless of your Fitbit model, it’s best to place it 2-3 fingers distance from your wrist
  1. Put your index, middle, and ring finger together, so they touch each other
  2. Place those two or three fingers just below your wrist, on the arm that you intend to wear your Fitbit
    1. It’s a good idea to repeat on your other arm, so you know the placement on both arms for when you might switch arms
  3. Place the Fitbit band at that location on your arm
  4. Buckle the Fitbit band one notch looser so its snug but not tight
    1. The perfect fit is when your device comfortably stays in place and does not slide up and down your wrist
    2. You should be able to stick one or two fingers between the band and your skin easily, without resistance

We recommend the three-finger arms placement since this is the best way to track your heart-rate. We often bend our wrists frequently during the day (at work, exercise, or play.) Frequent wrist bending interferes with the Fitbit’s heart-rate sensor.

band sizes for fitbit
Use a larger band for your Fitbit if you cannot get a loose and comfortable feel

If you aren’t able to get your Fitbit comfortably loose, try using a longer band that came with your device, if you aren’t currently using it. And if needed, purchase an extender band or a third-party band that fits your arm.

Do you have hairy arms?

If you normally wear your Fitbit tight due to your arm hair, we suggest you instead follow the steps above for a loose, comfortable fit BUT wear your Fitbit wear it on the inside of your arm, where there is naturally less hair!

place fitbit on inside of wrist and arm
If you’re not getting good readings from your Fitbit, try placing it on the inside of your wrist and arm!

You’ll generally get better measurements from your Fitbit too for things like heart rate and sleep monitoring.

Are you sweating a lot when working out or engaged in an activity?

When we sweat during workouts, in hot and humid weather, or even naturally during the day, that sweat can get trapped between the Fitbit and your skin. And if your Fitbit band is tight, it’s difficult for that perspiration to naturally evaporate.

sweating a lot with your Fitbit
If you sweat a lot and your Fitbit bad irritates your skin, try making it less tight!

This trapped sweat can then cause your skin to become inflamed, which often leads to redness, discomfort, and eventually rashes. Doctors call this moisture-associated skin damage (MASD.)

When that sweat (or another moisture source) gets trapped, your skin starts to soften, then, swell (inflammation), and even wrinkle. All of those things make your skin more vulnerable to damage from any present bacteria and the band’s natural friction.

The best remedy is to clean and dry both your Fitbit (the device and band) AND your skin after working out or after a sweaty event.

And always make sure you keep your Fitbit slightly loose on your arm to allow air to circulate and naturally evaporate any moisture, so it doesn’t get trapped in the first place!

Are you swimming or showering with it?

Although we can wear out Fitbit continuously throughout the day and even for several days without charging, that doesn’t mean we should!

Don’t shower with your Fitbit!

Fitbit in the bathroom
Keep your Fitbit out of your shower and bath!

When you shower, your skin loses some of the natural oils that maintain its moisture barrier. And hot water is even more culpable–it strips away more of your skin’s oily layer.

So if you like hot showers (and who doesn’t), we encourage you to take off your Fitbit!

Showering is the perfect time to charge your Fitbit and give your skin a rest.

After showering, remember to let your skin dry BEFORE placing your Fitbit back on. It doesn’t take long for the skin to dry–usually, about 5-10 minutes depending on the weather and how steamed up the bathroom is.

That time is the perfect opportunity to moisturize your skin and if your skin is particularly sensitive to the Fitbits’ bands, add a barrier cream to the area(s) where you wear your Fitbit.

And remember to dry your skin thoroughly before putting the Fitbit back on.

Love swimming? Wear your Fitbit!

swim with your Fitbit
As long as your model supports swimming, Fitbit is great at tracking your water workouts. Just make sure to thoroughly clean and dry it afterward!

As long as your Fitbit is a model that’s approved for swimming, wearing your device while swimming is a great way to track that exercise. If you swim or surf in saltwater, check your model’s user manual to ensure you can swim in salt water as well as freshwater.

Check that your Fitbit is approved for saltwater activity before you jump in the ocean or sea. Image by Fitbit.

What’s important is to clean and dry your Fitbit and your skin after your swim. And that means taking the device off for a few minutes.

If your swimming or surfing in the ocean or in a saltwater pool, it’s even more important to rinse off all the saltwater with fresh water to prevent salt buildup from your device AND your skin.

Are you routinely cleaning your Fitbit band and device?

Cleaning your Fitbit band (and the device itself) helps remove any debris, bacteria, allergens, and any other gunk that might be irritating your skin and causing problems!

So keep it clean!

That means cleaning your Fitbit band at least once per week if you aren’t working out or engaging in activity that requires immediate cleaning.

How to clean and disinfect your Fitbit

things needed to clean fitbit
Using a microfiber cloth is essential to cleaning your Fitbit. Adding a soap-free cleanser and alcohol wipes to disinfect are also good ideas. And don’t forget to clean your band(s) too!

In today’s world, we need to both clean and disinfect our Fitbits, including both the device and the band.

It’s best to follow the Center for Disease Control and Prevention recommendations for infection control to clean and then disinfect your wearable devices.

Follow the motto that the “C” (cleaning) comes before the “D” (disinfection & drying)

  • “C” (cleaning) means removing dirt, oil, sweat, and debris using water and a cloth (preferably a microfiber cloth). Fitbit does not recommend using soap to clean your band. Instead, if needed, use a soap-free cleanser on your Fitbit band.
    • Find soap-free cleansers in products made for people with sensitive skin or allergies
  • “D” (disinfection & drying) means using at least a 70 percent isopropyl alcohol wipe or Clorox/Lysol Disinfecting Wipes and then let the band air dry before wearing it again
    • Since rubbing alcohol and disinfecting wipes contain ingredients that are known to irritate the skin, it’s critical to thoroughly dry your Fitbit band and device before putting it back on!

And yeah, don’t use bleach or submerge your Fitbit into a cleaning agent or disinfectant!

If you use rubbing alcohol to clean the band or the device, make sure the band/device and your skin is dry before putting your Fitbit back on.

Do you have a metal or materials allergy?

If you tried some or all of the steps above and your skin is still reacting, you might have an allergy to the materials or the metals used in the band, buckle, the Fitbit’s casing, or its charging contacts.

Specifically, some folks are allergic to nickel or have nickel sensitivity.

Your Fitbit has either anodized aluminum or surgical stainless steel components. Both of those include small amounts of nickel.  All Fitbit models meet the European Union’s Nickel Directive for products that come into contact with skin.

For most people, meeting this standard means that they will not develop skin irritations or allergic reactions to Fitbit products. However, a small subset of users who are particularly sensitive to nickel may develop reactions, usually contact dermatitis.

What materials and metals are in my Fitbit?

To learn what materials your Fitbit model includes, visit the user manual for your Fitbit model and navigate to the section General Info and Specifications.

There, look for the heading Materials and review for specific information related to your model.

FitBit Versa 2 materials data
Review your Fitbit model’s user manual to get detailed information on the metals and materials used

How to prevent material and metal reactions from your Fitbit

If you suspect you have an allergy to the metal components of your Fitbit, it’s likely caused by the metal in the charging contacts reacting to the salts in your sweat and skin.

Very little of your Fitbit’s buckle actually comes into contact with the skin. So if you narrowed your skin’s reaction to the metals, it’s likely from those gold-colored charging contacts.

Gold charging contacts on back of Fitbit
The gold charging contacts contain a trace amount of nickel and may be causing your skin irritations and rashes

The simple solution is to cover those contacts when wearing it!

However, that is not as convenient as it should be.

Ideally, Fitbit (or third-parties) would offer sweat-resistant plugs (that also perform dual duty as anti-dust) for all Fitbit models. However, Fitbit does not produce these items and most third-party producers only offer them for older model Fitbits like the Surge or Charge (1st generation.)

Cover your Fitbit with tape!

So, in lieu of a custom plug, the next best option is to manually cover the charging contacts with a small piece of tape. Some folks use plain old invisible tape while others recommend microporous hypoallergenic paper, surgical cloth, fabric, or silicone tape. Even using a small piece of a band-aid seems to do the trick!

Just make sure you cover only the charging pins, not the other sensors!

You also want to wrap it around the sides of the device to prevent it from getting dislodged when you move.

use tape to cover your Fitbit charging port
Using hypoallergenic tape is a great way to prevent skin irritations and rashes from your Fitbit’s charging port

The downside is you likely need to change this cover routinely–sometimes once per day or after removing the tape cover for charging.

When all else fails, return it!

If you continue to experience rashes, allergies, or other skin irritations from your Fitbit and cannot find a remedy, we recommend returning it. When you buy from Fitbit, they offer a 45 day AND no questions asked return policy.

If you purchased your Fitbit from any third-party vendor (like Amazon), check their return policies–they often match or beat Fitbit!

If your Fitbit is not eligible for a return, reach out to Fitbit’s customer service to learn about options.

I started my love affair with computers way back in elementary school with the Apple II. Since then, I've worked with technology in my career as a media educator and videomaker. I have an MFA in media making from Temple University, where I also taught undergrads as an adjunct faculty member. So I know a thing or two about teaching others and creating how-to guides! After a cancer diagnosis, I turned to mobile technology like my Apple Watch to help me monitor my health throughout my chemotherapy treatment and later, to regain my wellness once in remission. I love sharing how to understand and use mobile tech, like smartwatches and phones, as a tool for empowerment to live our best and healthiest lives!


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