The answer depends on your personal circumstances. First, the diagnosis of
psoriasis might not have been correct.
Psoriasis is an autoimmune disorder and is a form of arthritis, and I don't know any cure for it. There are medications out there to control outbreaks. All medications can have side effects, but use of this product on the skin doesn't have too many problems other than causing skin irritation, pimples, and things like that.