A small treatment of Rosemary extract (Rosmarinus officinalis) extract, at about 2mg a day per mouse… improved hair regrowth caused by the testosterone interruption as well as dorsal shaved areas of the mouse.
The results suggest that topical rosemary hair growth extract seems to inhibit the binding of dihydrotestosterone to androgen receptors. It is because of this that the scientists believe that the Rosemary hair growth extract is a promising crude drug for hair growth.
The rosemary hair growth extract has not been tested on people, but it is a promising study regarding hair growth possibilities using a natural plant.