My daughter started having a reaction to the adhesives at the end of 2018, about a year after she started using the Libre. We are in Canada so she was using the 14 day sensors from the beginning. I am not sure whether Abbott changed something in their formula. The sensors started leaving a circle of raw skin underneath and the resulting skin damage does not heal well. We tried Flonase recently which seemed to help a bit, so this time we squirted multiple layers of Flonase on her skin before she inserted the sensor. She has about a week left on the sensor now. She said it’s been itchy so I am assuming that there is something going on underneath the sensor. I am hoping that it will be better than before. If not, we’ll have to try something else.