My DermaWand stopped working. I called the 800#. The customer support had me send a video showing there was no yellow light or connection. They replaced it immediately.
I'm on my 10th day of using Dermawand and I am looking forward to seeing my laugh lines disappear. So far I'm seeing some change. I'm making Dermawand a part of my daily routine .
If anything should happen I can have it rectified.