I used 1mL twice a day for maybe a month, got tired of waiting, and then jumped to 8mL per day. Within like no more than a months of switching, I had 2/3 inch long vellus hairs 1/2 inch below my hairline on my right side, growing out of smooth bald scalp that was bald at least 6 years. Then I stopped for hair transplant, lost those vellus hairs, and never went back to minoxidil.
Fact is, in 2 months of 8mL per day, my left side did not get those great results. Maybe it would have eventually. If spironolactone were stable in minoxidil, or EGCG were and had proven effects, I'd put it on as a topical with the minoxidil. But if it is just minoxidil, and no androgen receptor blocking, then I don't see a point in all the mess. And spironolactone is expensive. I can grind up pills, but the chalk in them is orange.