I was prescribed with betamethasone lotion for my scarring alopecia. Will this help regrow hair I still have? (photo)

My dermatologist looked at my scalp that I noticed recently my hair became thinner after I had an accident and became depressed I was either at home or work for a year. I was 21 at the time. After I became better. I noticed that my hair was thinner It was extremely small area when I was 17. You could barely tell. Other spots was thin but after 6 moths grew back normal. You can easily see my scalp. What will this betamethasone dip 0.05% lotion do for me? Will it help the small/thin hair regrow?