The Curl Needs Space Above the Tray
Custom Lash Boxes can fit a tray perfectly around its edges and still damage the product if there is not enough space above the lashes.
The tray footprint controls length and width. The highest point of the installed lashes controls the minimum usable depth above it. Dramatic strips, dense styles and pronounced curls can rise considerably higher than the plastic or paperboard tray that carries them.
That makes vertical clearance one of the first structural decisions.
A lid, sleeve or clear window should not press against the fibers when the pack closes normally or when the tray shifts slightly during handling. The purpose of the box is to preserve the presentation the customer expects to see when it opens.
Measure the Loaded Tray
Do not size the packaging from an empty tray.
Install the actual lash style first, then measure the complete loaded presentation: tray length, width, maximum tray depth and the highest point reached by the lashes.
Two styles using the same tray can still need different internal height if one has more projection or a taller curl.
That difference matters when a brand moves from natural styles into fuller or more dramatic collections without changing its tray supplier.
Clearance Is Not Empty Waste
A small amount of deliberate headroom performs a job.
It prevents fibers from rubbing against the inside surface and gives the tray enough tolerance to sit correctly without making the carton unnecessarily deep.
Too much unused height creates a different problem. The pack becomes bulkier and the tray can look visually lost inside it.
The goal is controlled space around the lash, not maximum space.















