Allergic reaction to new sensor tape

[Randy]

@mawmawned, it is apparent that we are not alone, and we already have a thread on this one:

Rash under Dexcom G6 sensor

After 12 continuous years of using Dexcom sensors, my last two have caused a rash underneath. It is persisting more than ten days after taking off the first one. Never had that problem before with Dexcom. Anybody else experiencing this? I put down a layer of Tegaderm before inserting the third one in the batch. Since Medicare is only allowing me three sensors at a time, I didn’t want to take the second one off even though it was itching and I knew would cause a rash. I tried calling Dexcom fo…

I am using 3m’s hydrocolloidal bandage with a hole punched through the center. That works for me, although one one of them I still got a rash the shape of the Dexcom sensor base.
There is a YouTube video referenced in the thread that shows how to do it. And specifics on how big a hole to make in the hydrocolloidal bandage.