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I was having problems with fading photos so I bought this product. I did a two week test by printing two of the same photo and putting both in the window for two weeks. One was sprayed with one coat of the krylon and one was not. There was a significant difference between the two photos after two weeks! There was absolutely no fading on the sprayed image at all. As expected, the non-sprayed image was very faded. I have read many reviews on this product that complain about the smell. It is no worse than any can of spray paint. It is an aerosol spray, I don't know what they were expecting.