[anonymous]

Have you looked into allergen specific immunotherapy? Has the dog had intra dermal skin testing done by a veterinary dermatologist?
Steroids and such are necessary for brief periods of time to stop the suffering and prevent infection.
Environmental allergies are complicated, they don’t go away, there is no cure. There is effective treatment, but, the expertise of a specialist is often required. The treatment is lifelong.

I went through it with a dog, the only thing that worked was allergen specific immunotherapy, it is the most natural approach.
Stop looking for miracle cures, there are none.