My name is Dave, and I took the 30 day challenge. Though I have been "buzzing" my hair for over ten years, I finally " went to zero" and I love it. I have suffered with SD for a long time but it wasn't till I found this forum, did I know the cause of my symptoms. Even had a few doctors tell me they had no idea what I had. Thanks everyone, and I look forward to getting to know you all.