After menopose with lack of oestrogens and no prgesteron, Boron can help to increasing the hormones, or oestrogens-like plants as well as those progesteron-like.
For convertion of testosteron to DHT and accumulation in the follicule of hair, I read licorice root, as tea or as lotion on hair is recommended, idem for sesame seeds or sesame oil applied on head, or pumkin seeds oil, rich in betasitosterol.
Hops is also interesting being oestrogen-like and at the same time anti testosteron.