I hate do disappoint you but nothing topical works long-term. I am female, 42 years old, and have grey hair that has been falling out for almost 10 years. Luckily it grows steadily so I didn't end up bald but with considerably less hair.
I've used minoxidil until it stopped working, probably 3-4 years. That's when I decided that something's wrong with me internally, since out hair is a good indicator of health. Think of pets with shiny fur and others with dull and thin fur. You would think that that pet is sick and you would give it a dewormer or better food.
I started cleansing intensely, colon, parasites and liver, and while the results are very slow to show, I feel that my hair loss has stabilized and more hair is sprouting. I can also see a lot more brown pigment which is encouraging.
My advice to you, stop wasting your money and start cleansing your body and diet.