About 4 months in....but the first thing I noticed was how healthy my gums were. Before they looked mottled, and not pink. After the first month of OP I noticed how nice and pink they were. That was what I saw first before the regrowth.
Now, when I say regrowth, I'm not talking all the way back....Some of them have a way to go. I believe it was Grzbear that had regrowth. But he is a very healthy man!!
Just hang in....after awhile you will be addicted and hardly care if you see anything at all. But it's logical that if people's pockets are shrinking, then gums can regenerate.