How does holographic printing actually work?

Holographic printing lays a specialized film or foil over the printed surface. Microscopic patterns in that film diffract light into a full spectrum, so the piece shifts color as the viewing angle changes.

• The effect: a rainbow shift that moves with the light.
• The mechanism: diffraction patterns split light into colors.
• Durability: scratch-resistant, and it does not peel or fade in normal use.