OP is exploring ways to stop or reverse greying hair, using NAC and considering PABA supplements. Some users suggest hairdye, black strap molasses, and copper as potential solutions.
A user's father experienced hair regrowth and other health improvements after two IV exosome treatments. The user also had four rounds of exosome therapy, noting significant hair regrowth and relief from headaches, but no change in grayhair.
Catalase is discussed as a potential treatment for delaying or reversing grey hair, but no reliable medicine currently exists. Other mentioned treatments include Imatinib, senolytics like Quercetin and Fisetin, He Shou Wu, Argan oil, and reishi mushroom extract, though their effectiveness varies.
Topical dutasteride is more effective than finasteride for hair loss but lacks FDA approval and research, leading to less use. Users report varying effectiveness and side effects, with some preferring oral treatments.
The post discusses the theory that melatonin could reverse grey hair by regulating certain enzymes. However, users who have taken melatonin reported no effect on preventing or reversing grey hair.