There are many components to hair loss. One of the bigger causes is Dihydrotestosterone (DHT). Finasteride can help. I told my doctor that I was getting up to use the bathroom two or three time a night, which was true, so I was prescribed finasteride. I kept taking it even after I was prescribed estradiol and spironolactone. Don't lie to your doctor, but if you are having potential issues due to an enlarged prostate, then that may justify finasteride.
Rogaine, or a generic equivalent, may help. I used it for a year or two and thought it was helping, but it could have just been wishful thinking. It doesn't hurt to try, and it's available without a prescription.
Some people have reported a shampoo called Nizoral may also help, although it's marked to help dandruff. I used it for a while, but I don't know if it made any difference. Once again, it doesn't hurt, just don't use it more than twice a week because it really dries out your hair.
There are some supplements which many people feel help hair growth. Biotin is probably the most popular. In addition to hair, it seems to help strengthen nails. Many stores sell it as something to help 'Hair, Skin, and Nails'. It isn't expensive. I take some every day. I am fairly confident it is helping my nails, but I can't really tell if it helped my hair.
The one supplement I've tried which I truly believe is helping my hair is Viviscal. It isn't the best tasting tablet I've ever swallowed, it tastes a bit fishy. About a year ago my stylist noticed some new hair, and it's appearance seems to line up with when I began taking Viviscal. The tablets are not cheap, a package of 60 is usually around $33 - $35 US. The packaging recommends two tablets per day, but I have only been taking one due to the price. I have seen the product in WalMart and Target stores.
Currently, I am taking the 'Hair, Skin, and Nails' supplement with biotin, and Viviscal.
Love always -- Jessica Rose