The effect varies depending on whether it's cloudy, sunny, or otherwise. The non-adhesive design significantly reduces chemical release, is ready to use in minutes, and adheres firmly to windows. The window film can block up to 96% of UV rays and reduce glare by up to 79%, slows the fading of floors and furniture, and reduces energy bills by up to 30% by rejecting 45-85% of total solar energy. Provides privacy: The sunflower window film can provide you with a secure, private space. The non-adhesive window stickers leave no residue after removal and can even be reused.