Sweat, Humidity and Your Libre Sensor: How to Keep It Stuck and Working!
May
If you’re using one of the Freestyle Libre sensors for continuous glucose monitoring, you’ve probably had moments where it just wouldn’t stay put—especially during the summer in humid climates. If you are active person you definitely notice that after a run or a sweaty workout. Let me tell you you’re not alone.
Unfortunately, the glue strip around the sensor can struggle with moisture, and for CGM users, that can mean frustrating sensor failures or inaccurate readings.
Let’s dig into why humidity and sweat affect your Libre sensor, what you can do to mitigate that. We will also talk about how the MirTouch Adhesive Patches can make a big difference in keeping your sensor secure.
CGM Sensor Adhesive Patches
Why Do Humidity and Sweat Cause Problems?
While the Libre sensor is designed to be water-resistant and to last up to 14 days (up to 15 days with the PLUS), it’s still relying on a sticky adhesive to stay attached to your skin. But that’s under ideal conditions. In reality, that adhesive is no match for persistent moisture or sweat.
Here is a list of possible things that can go wring when your skin is sweaty or the air is thick with humidity:
1. Adhesive Breakdown
High humidity in the air or sweat from your skin can gradually break down the sensor’s adhesive. This weakens its ability to stay fully attached, especially around the edges. Once those edges start lifting, it’s only a matter of time before the sensor peels off entirely.
2. Sweaty Skin = Slippery Surface
If you apply the sensor to skin that’s sweaty, oily, or damp—even just slightly—it may never adhere properly to begin with. That leads to early detachment and inconsistent sensor performance.
3. Temperature Fluctuations
Going from a cool room to a hot, humid outdoor environment can cause your skin to sweat unexpectedly. The constant shifting can cause the breakdown of the adhesive.
4. Physical Activity
When you’re moving, exercising, sweating, or rubbing against clothes, that friction and moisture together can cause sensors to dislodge or fall off prematurely—especially without additional protection.
5. Skin Irritation and Sensitivity
Hot, damp skin is more prone to rashes or sensitivity. If your skin becomes itchy or inflamed, you may be tempted to remove the sensor early, which defeats the purpose of the 14-day wear.
Tips to Improve Sensor Performance in Humid or Sweaty Conditions
Here are a few proactive things you can do to help your Libre sensor survive sweaty days and sticky nights:
- Prep Your Skin Properly
Use an alcohol wipe or skin prep wipe (also known as skin barrier wipe) to remove sweat, oils, and lotions from the application area. This helps the adhesive stick better and last longer. - Let Your Skin Fully Dry
After wiping down the skin, give it time to completely dry. Even a little moisture can sabotage the stickiness of your sensor. - Avoid Application Right After a Shower or Workout
Your skin might seem dry, but lingering moisture can interfere with adhesion. Wait 30–60 minutes after heavy sweating before applying your sensor. - Consider a Support Patch
Using a durable overlay patch can help keep your sensor secure—even during workouts, swimming, or steamy weather.
How the MirTouch Adhesive Patch Can Help
This is where the MirTouch Adhesive Patches for Freestyle Libre Sensors shines. It’s designed specifically to tackle the issues caused by sweat, humidity, and everyday wear and tear.
- Comes with 12 Prep Wipes: Good adhesion starts with good prep. MirTouch includes a complimentary prep wipe for each patch so you’re set up for success with every patch. The skin barrier wipes also make removal easier.
- Waterproof & Sweatproof: These patches are built to keep your sensor air and water tight through showers, swims, sweaty workout sessions—you name it.
- Transparent & Discreet: MirTouch patches are clear and blend into your skin, so they don’t draw extra attention or feel bulky.
- Durable: These adhesive patches can last as long as your sensor does, reducing the chances of mid-wear detachment.
- Comfortable to Wear: Flexible and breathable, these patches don’t trap sweat or cause unnecessary irritation.
If you live in a humid climate, are active, or just want the peace of mind that your Libre sensor isn’t going anywhere—the MirTouch Adhesive Patch is your go-to solution.
CGM Sensor Adhesive Patches
Final Thoughts
The Freestyle Libre is an incredible tool for managing your glucose—but it needs to stay put to do its job. Sweat and humidity are common obstacles, but with the right prep and a little extra reinforcement from a product like MirTouch patches, you can keep your sensor secure and accurate for the full wear time.
No more worrying about it falling off in the middle of a run, swim, or summer BBQ. Just stick it, patch it, and get on with your favorite activity.
