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"  As I am with many infomercial products, I was skeptical when I first saw Block Out touted in a TV commercial. This waterproofing spray claims to add an invisible barrier to repel stains without changing the look or feel of even your most delicate fabrics (they even spill red wine on a wedding gown to demonstrate!). Here at the Good Housekeeping Research Institute we tried it out on some common items to see if it lives up to its claims. We applied the Block Out spray to eight fabrics: a leather shoe, a walking sneaker, a faux-suede slipcover, a pair of tights, denim, a cotton t-shirt, wool crepe, and silk. Here&amp;#039;s what we saw... How It Affected the &amp;quot;Look and Feel&amp;quot; \u2022 The silk fabric stained. \u2022 The wool crepe fabric did not change in appearance, but did feel a bit stiff from the spray. \u2022 The leather shoes did not change in color, but the leather did pucker a bit and didn&amp;#039;t feel as smooth as it did untreated. \u2022 The sneaker changed color, but only very slightly. The feel of the fabric did not change, though. \u2022 The tights, denim, faux-suede slipcover, and cotton t-shirt did not have any changes to the look or feel of these fabrics. So Did It Repel Liquid? Yes! (Well, initially, at least.) We applied water onto items treated with Block Out as well as the same items that weren&amp;#039;t treated. The water repelled on all items, while it absorbed into the untreated counterparts. But Does It Last? In this case, no. We washed and dried all items that are machine-wash safe (the tights, faux-suede slipcover, denim, and cotton t-shirt) one time and then reapplied water. While there were still some signs of water resistance compared to their untreated counterparts, the garments didn&amp;#039;t repel water as much as after the initial application. It was clear that the Block Out did not hold up well during the wash. Bottom line: While we were pleased with how well Block Out repelled water after the initial application, it was discouraging to see that it did, in fact, affect the look and feel of some delicate fabrics, and it washed out after one laundering with other fabrics. TELL US: Have you seen any As Seen on TV-style products advertised that you&amp;#039;d like us to test? "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.goodhousekeeping.com/institute/a24936/block-out-waterproofing-spray/>