I did use Thursday Plantation tea tree oil before it started to cause me problems with dermo, it is / was great stuff my podiatrist recommended it to me originally.
And another good thing about tee-tree oil is that fungi doesn’t grow well in it either
Flaky skin can in some cases be a fungi infection , with an average high blood glucose we also more often can catch a fungi infection all over the body
Lots of people write about the benefits of coconut oil on skin problems.. never tried it myself but might be worth go.
Yes the same stuff you cook with.