Private Ryan:
Sounds cool. I have read mixed things about half-life of minoxidil (12 hours here, 1 day there). Even if the half-life is half a day, I fail to see what this means to the follicles in which the minoxidil has diffused into means. Simple process. Apply minoxidil. It diffuses into the skin, attaches to the hair follicle, and then effects intracellular processes. Just because it is not 'around' after half a day in the blood or skin, doesn't mean it is not effective. The cells are being effected by the minoxidil. Something like propecia is perhaps a tad different, as its life in the body is important as it is systemic, so having it active in the blood is how it works.
I guess I want someone to tell me that, applying minoxidil twice per day does X to a cell, while applying it once does X to the cell in a 24 hour period. Anyway, I have read convincing articles by derms who are experts in hairloss stating that once per day is enough. Since I am maintaining, it is perfect. It is also easier on the skin and the wallet.