Does topical Azelaic Acid really block DHT?

[Optic Eye]

I've been using the solution of 10% minoxidil combined with azelaic acid for about 6 months and I've had some major shedding. Does Azelaic Acid really work to block dht? I've read that I blocks up to 100% of the DHT where it is applied. Where is the proof? Is this just more wishful thinking? If it does work where are the test results? Let's see some before and after photos of anyone using Azelaic Acid with Minoxidil would be nice.

I've also read that there is topical Xandrox 15 Plus (15% Minoxidil, 5% Azelaic Acid and 0.1% Propecia). Doctor Lee is selling this. I'd like to see some before and after photos from this also.

What about topical Propecia? Is there really such a beast in hairloss land? If it does exist is it as effective as the pill, if so, where can I buy some?