FreeStyle Libre Sensor Fell Off — Better Adhesion Tips

Hello. FreeStyle Libre 2 and Libre 3 sensors are approved for 14-day wear, but adhesion failures before day 14 are common in active users, warm climates, and people with sensitive skin. Here is how to get the full wear period. Step 1: Prepare the insertion site carefully. Choose a site on the back of your upper arm, at least 2 inches away from your elbow crease. Wash the area with soap and water, rinse well, and pat dry. Then wipe with an isopropyl alcohol wipe and wait a full 60 seconds for the alcohol to evaporate. Inserting a Libre sensor on damp skin — even from residual alcohol — significantly reduces adhesion. Step 2: Apply a skin prep wipe before insertion. Skin Tac or Smith & Nephew Skin Prep wipes add a thin, clear adhesive film to the skin that bonds with the sensor adhesive. Apply to the site and let it get tacky — 15 to 20 seconds — then apply the sensor directly onto the tacky surface. Step 3: Press firmly for 30 seconds after application. Once the sensor is placed, press the entire adhesive pad firmly against your skin for a full 30 seconds. Most people do not press long enough for the adhesive to fully bond with the skin. Step 4: Apply an overpatch immediately. FreeStyle Libre overpatch stickers are available free at myfreestyle.com or from your DME supplier. Abbott offers clear, round overpatch stickers designed for the Libre sensor size. Third-party options include Pump Peelz, Livi Medical, and Skin Tac Donut patches. Apply the overpatch on day 1, not when the sensor starts lifting. Step 5: Protect the sensor during showers and swimming. The FreeStyle Libre 2 and 3 sensors are waterproof to 1 meter for 30 minutes. For longer swimming or heavy water exposure, apply a transparent waterproof tegaderm dressing cut into a frame shape around the sensor before water exposure. Avoid submerging in hot tubs for long periods. Step 6: Manage sweat with sport patches. If you exercise intensively, KT Tape, Nexcare Waterproof tape, or a dedicated CGM sport patch can dramatically improve adhesion during workouts. Change the sport patch as needed while keeping the sensor in place. Step 7: If your sensor fell off before 14 days — contact Abbott for a replacement. Abbott's sensor replacement policy covers sensors that fail due to adhesion failures before day 10. Call 1-855-632-8658 and provide the sensor lot number from the original packaging. Still need help? Find a CGM provider near you →