I've been having trouble with fogging whilst out on my motorbike in the wet, so bought this product as a possible solution.
I wear glasses, so applied the product to both sides of the lenses in my glasses, and both sides of my visor.
Unfortunately, as far as I can tell, it has had no effect what so ever. Neither positive or negative.
I applied the product as directed, applying the stick to both sides and buffing off with a microfibre cloth. It just doesn't do anything!