Window Film World, you have a very pretty product that filters light and provides privacy without the need of a curtain. I purchased a roll of vinyl window film for my bathroom. When it arrived I was applying it to a freezing cold window in the middle of winter. I followed all the directions with the clean window, plenty of water, press out the bubbles with a plastic card, etc. After a couple of hours, it would fall off the window. I tried using a hair dryer to warm the product and the window, and that would result in a little longer sticking time, but it still fell down overnight. I contacted customer service for advice and received no response. Finally, I followed all the instructions, plus I applied some petroleum jelly to the corners and edges where the vinyl was peeling away. After every shower I would press down on any area where the vinyl was detached. It is sticking beautifully, and I love the effect. Thank you for this beautiful and effective product.