I have transition lenses, and I had a difficult time finding a product safe to use, until Viewdoo came around; Thank you Viewdoo.
I think this product speaks and pays for itself in to time. Not only can people see my eyes, but I can see them as well.
I use Viewdoo on my bathroom mirror, and it saves so much time in the morning getting ready; I also used the dropper on my iPhone, and I love that there are no fingerprints.
My favorite CD was skipping, and I didn't know what to do about it. A friend recommended Viewdoo-Wax, et Voila: it worked like a charm.