Privacy Level: Opaque window films protect your privacy by blocking others' eyes. Providing 90% privacy, this window film lets in natural light. It can keep your room private with good light transmittance. It is also a clean and modern alternative instead of curtains or blinds. (not recommended for bathroom use) Rainbow under the light: Window film itself has no color. But if the light passes through it, it will reflect the rainbow effect. As the light changes, the color also changes. It can be applied for any smooth glass. No Adhesive: It can be removed easily without leaving any traces. You can apply and remove it again if it is not damaged or stained. UV prevention and energy saving: Eco-friendly window stickers keep your home cool in summer and warm in winter. Blocks 96% of UV rays, delays furniture aging and fading. NOTE: It can be applied to smooth glass only by peeling off the backing film before installation, you must thoroughly wet your window and the window film.