I get dermatitis on my face too, especially around my nose and mouth. I’ve tried everything with little improvement until I was recommended Lyonsleaf which is a natural zinc and calendula cream. It’s amazing stuff, it completely cleared mine up and so far apart from a couple of small flares, it’s keeping it at bay. The little pot is small but I’ve been using it continuously since January and it’s barely gone down at all. I got mine from Amazon and I think it was around £10. Worth a try?