Product review (5 stars): Great product.
I followed a few blog posts that advised to use vinegar in my dishwasher, and it ruined my dishwasher rack. I live in an apartment so I was very worried about being charged for 2 new racks. I laid the rack on plastic shopping bags near my balcony, where I had the glass door open to air out the room. I applied 3x over the course of 2 days.

This product, along with a few caps, makes it look like I didn't damage the rack. It's been 3 months and the rack still has this material on it.