Sorry cannot answer your question directly, but my wife uses Dovobet, but since she began shadowing me on a Low Carb diet she has found that her psoriasis has improved hugely, and she hardly needs to use the stuff nowadays.
I had psoriasis for 50 or so years, I am now 68 years young, used Dermovate but when I went through the change my skin vastly improved and the last scales from my elbows disappeared a couple of years ago and am now clear.