>Repigmentation of gray hair after thyroid hormone treatment
https://pubmed.ncbi.nlm.nih.gov/17961449/

>Darkening of gray and white hairs occurred in 2 patients with increased exogenous triiodothyronine (T3) due to treatment of myxedema coma in one case and iatrogenic hyperthyroidism in the other.

>On day 5, all T3-treated mice entered the anagen phase, whereas the anagen phase started spontaneously in control mice on day 9, and not until day 15 had all controls entered this phase

>These data suggest that follicles in the telogen phase can be induced to enter the anagen phase by the topical application of T3. This thyroid hormone may reverse graying of the terminal hair.

so I had hypothyroidism for a while, and I've been very grey since my early 20's
the doctor didn't bother telling me anything about the fact that hypothyroidism is the culprit here.
Now I'm reading that the greying can be reversed, so my question is this:
Is this T3 they mention in the study something I can get to treat my grey hairs? or is treating hypothyroidism hair greying still in experiment phase?

I'm a dude, pic is from google.