Does minoxidil (Rogaine) show positive results for a 64 year old male?

Minoxidil is FDA approved age 18 to 65. Given the extreme stability of your hair loss over the past 2 decades it is unlikely to benefit. Minoxidil is used after age 65 in what is called an "off label" use and may help a very small proportion of men with ongoing genetic or age-related hair loss. However, be sure to check with your physician before starting minoxidil/ Rogaine to ensure you have no medical reasons that would prohibit its use.

minoxidil can work on a man or a woman of any age if it is used properly at least once a day applications