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Want your Dexcom G7 patch to stay secure for the full 10 days? Here's what you need to know:
Quick Tip: The first 12 hours are critical - keep the patch dry and sweat-free to ensure it sticks longer.
Follow these steps to maintain reliable glucose monitoring and avoid early replacements.
The Dexcom G7 combines the sensor and transmitter into a single device, approved by the FDA for up to 10 days of continuous use, plus an extra 12-hour grace period. Adults and children over 7 years old should wear it on the back of the upper arm, while kids aged 2-6 are advised to place it on the upper buttocks.
The patch comes with a built-in adhesive designed to last the entire wear period. For extra security, each G7 sensor also includes an overpatch.
Several factors can weaken the adhesive and cause the patch to peel prematurely:
Moisture-Related Issues
Skin Surface Problems
"The longer you keep it dry and sweat-free in the first 12 hours, the longer it may stick to your skin and keep it from falling off." - Dexcom
Physical Factors
To spot early signs of adhesive issues, look for:
The first 12 hours after applying the patch are critical for ensuring it sticks properly. During this time, keep the area dry and avoid putting stress on the patch. Knowing these common issues can help you prepare your skin and care for the patch effectively.
To tackle common adhesive issues, follow these straightforward skin preparation steps.
Choose a stable, flat area of skin without folds. Use electric clippers to trim any hair - avoid razors to prevent irritation. Wash the area with oil-free, antimicrobial soap to remove oils, lotions, and residue. Gently exfoliate the skin in circular motions to smooth the surface, but skip any harsh scrubbing.
Consider using one of these barrier options for added protection:
| Barrier Type | Best For | Application Tips |
|---|---|---|
| Smith & Nephew No-Sting Skin Prep | Sensitive or damaged skin | Apply a thin layer and allow it to dry completely |
| Cavilon No-Sting Barrier | General use | Available as wipes or spray for easy application |
| Hydrocolloid dressings | Extra protection | Cut an oval opening to fit the sensor placement area |
For additional support, apply an unscented solid or spray antiperspirant 10–15 minutes before inserting the sensor. This can help reduce moisture and improve adhesion.
After washing, pat the area dry with a clean towel, then wipe it with alcohol and let it air dry for about 10 seconds. Avoid applying the sensor right after a shower or in a humid bathroom. If needed, use a hairdryer on a cool setting or move to a less humid space to ensure the area is fully dry.
Properly drying your skin - especially during the first few hours after application - can make a big difference in how well the patch sticks and how long it stays in place. These steps help improve sensor adhesion and extend wear time.
Overlay patches help secure your Dexcom G7 sensor during everyday activities. These adhesive covers add an extra layer of protection, keeping your sensor in place and shielding it from external factors like water or sweat. They also help prevent the edges from peeling or the sensor detaching prematurely.
Here’s how overlay patches can make a difference:
| Advantage | What It Does |
|---|---|
| Longer Wear Time | Adds extra adhesion to ensure the sensor stays secure for the full 10-day period |
| Extra Protection | Reduces the risk of dislodging from accidental bumps or snags |
| Water Resistance | Acts as a barrier against sweat and water |
| Saves Money | Lowers the chance of needing early sensor replacements due to adhesive issues |
Follow these steps to apply your overlay patch correctly:
These steps work alongside your skin preparation routine to maximize sensor adhesion and reliability.
For an excellent overlay patch option, check out Pump Peelz:
Pump Peelz creates patches specifically designed for the Dexcom G7. Their Ultimate Patch Packs are priced between $39.99 and $109.99, depending on the quantity (25 to 100 patches). If you prefer to buy individually, each patch costs $3.99 - an affordable way to extend your sensor's lifespan.
"Peelz patches keep your CGM and pump secure so you can focus on what you love - without the worry." - Pump Peelz
In March 2025, Patricia Casale shared her experience using Pump Peelz Spring patches, noting they kept her G7 sensor firmly in place. The patches are made with skin-friendly materials, ensuring easy application and dependable adhesion for the entire wear period.
For even more convenience, Pump Peelz offers a subscription service with a 15% discount and free shipping. This option is ideal for those who regularly need replacement patches to keep their sensors protected.
The Dexcom G7 sensor can handle water up to 8 feet deep for 24 hours. That said, keeping the patch dry helps it stick better. After swimming or showering, gently pat it dry with a clean towel - don’t rub, as that can weaken the adhesive. While the sensor itself is waterproof, its Bluetooth signal might not work when fully underwater. If readings are missed, they’ll automatically update on your phone app or receiver for up to 24 hours, and on watch apps for up to 6 hours.
For activities that cause more sweat or movement, try these extra tips.
Workouts can be tough on adhesion. Here’s how to keep your patch in place during different activities:
| Activity Type | How to Protect the Patch |
|---|---|
| High-intensity cardio | Use a clean towel to pat dry often |
| Swimming/Water sports | Add a waterproof overlay beforehand |
| Outdoor activities | Apply extra adhesive for sweat resistance |
Sleeping can sometimes loosen the patch due to movement. Use these tips to keep it secure overnight:
For added security, press and rub around the patch’s edges three times before bed.
The Dexcom G7 uses a medical-grade, acrylic-based adhesive, which can occasionally lead to skin reactions. Watch for early signs like:
Here’s how to address specific issues:
| Skin Issue | Solution | Professional Tips |
|---|---|---|
| Mild irritation | Apply a barrier film (e.g., Smith and Nephew IV Prep or Cavilon™) | Ensure it dries completely before placing the sensor. |
| Moderate reaction | Use a hydrocolloid dressing (e.g., DuoDERM® or BAND-AID® HYDRO SEAL®) | Cut an oval opening to fit the sensor. |
| Severe sensitivity | Use fluticasone propionate nasal spray | Apply 2 sprays and wait 2 minutes before inserting the sensor. |
If irritation continues, consider changing the sensor's location.
Switching the placement of your sensor can help avoid repeated skin problems and ensure proper adhesion. Here's how to do it effectively:
Pump Peelz overlays can add an extra layer of protection for sensitive skin. These patches are designed with:
For best results, apply a barrier film first, let it dry thoroughly, and then place the Pump Peelz overlay patch.
If severe skin irritation develops, consult a healthcare provider.
Make your Dexcom G7 patch last longer by focusing on preparation, protection, and upkeep.
"The longer you keep it dry and sweat‐free in the first 12 hours, the longer it may stick to your skin and keep it from falling off"
| Phase | Key Actions | Benefits |
|---|---|---|
| Preparation | Clean the site, remove residue, and dry it thoroughly | Ensures a strong surface for adhesion |
| Protection | Use Pump Peelz overlay patches | Improves durability and adhesion |
| Maintenance | Pat dry after water exposure | Keeps the patch effective |
Choosing the right site is also essential for better adhesion. Pairing this with Pump Peelz overlay patches, designed to be gentle on skin, helps secure your sensor while staying comfortable during use.
For best results, apply overlay patches early and rotate sensor sites regularly. These simple steps help maintain sensor accuracy and comfort, ensuring reliable glucose monitoring and uninterrupted diabetes management.
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