Femara and dramatically

I have had significant hair loss since beginning Femara last April -- probably at least a third of my hair on the top of my head. Also, other body hair has diminished dramatically. It thinned somewhat with five years of Tamoxifen, but that ended three years ago, so that is no longer the problem. I understand from my search that 5 percent of Femara users have the bad luck to have this side effect. The question I have now, since I stopped using it, is the hair loss reversible??