I have seen HD Brows looking more defined but more often than not to get the real HD shape it's a work in progress.
I did the HD training 2 years ago, and it was fantastic, I've been a therapist for a very long time and I thought it was worth the money and it was one of the best trainings I have ever been to.
There are alot of awful HD Brow look-a-likes out there that try and cheat by just doing a brow tint and shape, but this is a 7 step procedure that designs the brow in High Definition for that brow and that face. HD Brows have filled most of the empty spaces in my salon and brought a different kind of client, so I'm very happy with that.