Holographic glitter is a hexagon-shaped holographic (thin, flexible plastic) film that has been micro-embossed with patterns having 3-dimensional photos printed on it using a laser. The embossing process involves cutting tiny grooves into the film's surface at different angles and various shapes… When light hits the film, it diffracts into its component colors, creating an iridescent rainbow effect. The image and spectral coloring will change as you view the grooves at different positions and angles.