Most likely La Roche-Posay code locations
For La Roche-Posay, start with the box flap. If the outer box is missing, move to the tube crimp and then the bottle shoulder.
The correct code is usually a compact alphanumeric string printed away from the main barcode and marketing copy.
- Check the box flap under bright side light.
- Check the tube crimp under bright side light.
- Check the bottle shoulder 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 La Roche-Posay 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.