Natural ingredients will inhibit DHT but Procerin is widely regarded as a scam. They have hundreds of fake scientific sites selling it. The formula just hasn't been shown by actual users that I've read to be effective. If you want an all natural topical DHT inhibitor then try www.revivogen.com
. Also, you could try www.folligen.com
As I've stated before I don't think lowering DHT in the body is a good thing at all. New research, as well as my own thought, is that DHT is not the smoking gun at all. Inflammation, superoxides, etc are the culprit. You can try to eliminate DHT topically but good luck getting any results, they just aren't potent enough and don't absorb well enough. If you catch things super early on, you may delay things for a little while at best.
I would try my big 4. If anything, it is just good for you no matter what. If you are hellbent on lowering your DHT internally using supplements you can try Saw Palmetto, which is often the active ingredient in topical treatments. You could also try (going from memory) Zinc, Beta Sitosterol, Stinging Nettle Root Extract.... the list goes on.