This hologram film diffracts the light and creates privacy. If a person or object is within a few inches of the film, you will still see shadows through the film, but it is a privacy film suitable even for bathrooms. Can be used to cover any glass surface such as glass windows, doors, sidelights and shower enclosures. Blocks 90% of UV rays and softens and diffuses glare of harsh sun. Easy to install and repositionable.