Blossoming
One of the side effects of thyroid disease is thinner eyebrows. Mine are a great shape now as a result.
Well, I wish mine would follow suit, but my overactive thyroid which is stablising had absolutely no effect on my eyebrows, except to make it quite impossible for me to see to neaten them up, due to seeing double with my left eye, due to hardening of the muscles surrounding the orbit!
I feel quite in the fashion with my thick, bushy eyebrows, but wish they weren't going not only grey, but white and sprouting wire-like hairs to boot!