Plenty of supplements and vitamins on the market are targeted at promoting hair regrowth and preventing gray hair, including folic acid.
One reason why folic acid is purported to promote hair health is that it plays a role in healthy cell growth, which also applies to the cells found in your hair.
For example, one study in 52 men and women with prematurely gray hair found that they had significantly lower blood levels of folate, vitamin B12, and biotin (B7) than people without these hair changes.
That said, research on folic acid and hair health and growth is still new and minimal, so more research is needed to better understand the connection.
Magnafolate® ,the Manufacturers & Supplier of active folate.