Lot DateCosmetic batch code checker for production date and expiry
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Kose Batch Code Location Guide

Find the right Kose batch code before decoding: check box, bottle, tube crimp, seal, and avoid barcodes, shade numbers, or SKU codes.

Locate the correct Kose batch code before using the checker. Failed lookups often come from entering a barcode, shade reference, or incomplete print instead of the production lot.

Last updated: 2026-06-30

  • Kose is usually checked from a short Japanese cosmetic lot code.
  • Start with box bottom or bottle base, then confirm another package area if the print is faint.
  • Use one complete printed string from one location; do not merge box and bottle fragments.

Most likely Kose code locations

For Kose, start with the box bottom. If the outer box is missing, move to the bottle base and then the compact base.

The correct code is usually a compact alphanumeric string printed away from the main barcode and marketing copy.

  • Check the box bottom under bright side light.
  • Check the bottle base under bright side light.
  • Check the compact base under bright side light.

Numbers to ignore

Do not enter the long barcode number, shade number, SKU, ingredient registration number, or volume marking. Those strings identify the product, not the production batch.

If several Kose codes appear, enter the shortest complete batch-like string first and compare it against the same print on another package area.

When the print is hard to read

Embossed or low-contrast batch codes are easier to read with side lighting. Take a photo, zoom in, and preserve leading zeroes, separators, and letter case.

If the box and container disagree, check whether one string is a product reference. The actual batch code is usually shorter and less prominent.