Start With the Palette
An eyeshadow carton should be dimensioned from the closed compact or palette, because pan count tells you almost nothing about the outside footprint. A quad with a thick mirror lid can need more depth than a larger palette using a much flatter component.
Measure the widest, longest and highest points of the finished palette, then note the hinge, clasp and any raised frame around the lid. Those features determine where the carton can fit closely and where clearance matters more than tightness.
Measure the Closed Component
Measure length, width and depth with the palette fully closed. Include any raised clasp, hinge barrel, decorative frame, mirror housing or domed lid that extends beyond the main body.
Do not calculate the carton from pan count. Two nine-pan palettes can use completely different component dimensions, and even a small raised feature can change the internal depth required.
Find the Highest Point
Broad cosmetic components are rarely perfectly flat from edge to edge. The centre of the lid, clasp or hinge area may sit higher than the surrounding surface.
Use that highest point when setting internal depth. If the carton is sized only from the flatter body section, closing pressure can be transferred directly onto the palette lid.











