On the Dexcom and Libre Rash Facebook group, I saw a note posted back in December from someone referencing sensors with an expiration date after August 17, 2017. “Dex recently changed their mfg process to eliminate a substance that caused rashes in some. Get some expiration date AFTER 8/15/17 …” Huh.  Interesting.  (Read: HOLY SHIT COULD THIS BE TRUE??!!) I’ve been…