Even then, the same problems come in which make it nearly useless, or at the very most a total shot in the dark. As I mentioned, just being able to inhibit 5a isn't enough information. How often must one apply it topically? In what solution? With what vehicle? In what dosage? .... in order to result in benefit to hair loss.
If we don't have any of this information, Im not clear on the value of even discussing it.
In order for something to be useful as a hair loss treatment, several questions should be answered, not just the question of 5a inhibition.
Lots of things are said to inhibit 5a. I could inhibit 5a if I had a small enough Net to catch it with. Practicality and effectiveness are just as important as knowing it can inhibit.
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