Where is a HAKU batch code?
Inspect the base, refill cartridge, tube crimp, rear label and carton flap for a short mark separate from the Japanese sales name.
Check a HAKU product batch mark
Shiseido's HAKU range includes Melano Focus IV medicated serum in 20 g and 45 g formats, a 45 g refill, Day Brightening UV, Refiner, brightening foundation and cushion products. 'IV', 'F', SPF50+/PA++++, net weight and foundation shades describe the model, function or size; none is the manufacturing batch by itself.
Haku FAQ
Is IV in Melano Focus IV a lot code?
No. IV identifies the product generation, while the manufacturing lot appears as a separate traceability mark.
Can I use the code on an old EV dispenser for an IV refill?
No. Use the IV refill cartridge or its carton because the reusable outer dispenser may have been manufactured earlier.
Match the HAKU format before decoding
Before you rely on the decoded date
- Check the bottle or compact base, refill cartridge, tube crimp, rear label and carton flap. Photograph the Japanese sales name and whether the item is a main container, special-size set or refill together with the separate short printed or embossed mark.
- Melano Focus IV refills can fit an earlier Melano Focus EV outer container. Date the current refill from its own mark, not from the reusable dispenser, and retain the refill carton until the cartridge is finished.
Common lookup mistakes
- Do not submit IV, EV, F, 20 g, 45 g, SPF50+/PA++++ or a foundation shade as the batch code.
- When a set contains full and special sizes, record each unit separately because their traceability marks can differ.
What to check next for Haku
For Haku, combine the decoded date with product type, PAO, storage, and seller context before deciding whether to open, keep, replace, or buy.
Understand what the checker can prove
See how Lot Date estimates production timing, where precision drops, and when official packaging should override the result.
Read methodologyMake sure you are reading the right string
Use a locating guide before retrying if the printed code is faint, split across the box and bottle, or easy to confuse with barcode data.
Open guide: How to Find Cosmetic Batch Codes and Lot Numbers on PackagingTurn the decoded date into a safer use decision
Use an expiry guide when production timing alone is not enough to decide whether to open, keep, or replace the product.
Open guide: How to Check Cosmetic Expiry Date from Batch Code, PAO, and PackagingCheck seller, storage, and authenticity signals
Use a risk guide when the item comes from marketplace stock, duty-free inventory, resale, or a seller you do not fully trust.
Open guide: Does a Batch Code Prove Authenticity? Can a Cosmetic Code Be Fake?Haku lot, expiry, and packaging checks
Continue with the check that matches the product: find the lot number, review expiry or PAO, separate the batch code from the barcode, or assess sunscreen and fragrance more carefully.
Cosmetic Batch Code Lookup: Find the Right Code
Find the cosmetic batch code on your box, bottle or tube. Separate the lot from barcodes and shade numbers, then choose the brand to check production.
Cosmetic Batch Code Lookup: Find the Right CodeCosmetic Lot Number Search | Find a Lot Code by Brand
Find and copy the cosmetic lot number from your tube, jar or box. Keep kit components separate, then select the brand in Lot Date to check production.
Cosmetic Lot Number Search | Find a Lot Code by BrandCosmetic Expiration & Expiry Date Checker
Read a cosmetic expiration date or PAO symbol. Compare sunscreen, jelly and opened skincare labels, then check the batch code for production age.
Cosmetic Expiration & Expiry Date CheckerCosmetic Expiry Date from Batch Number
Enter a cosmetic batch number with its brand to check production age. Follow the result with product-specific expiry, unopened-life and PAO instructions.
Cosmetic Expiry Date from Batch NumberCompare related brands
Read next for this brand
- What to Do When the Batch Code Result Conflicts with Your Purchase Date
- How to Check Cosmetic Expiry Date from Batch Code, PAO, and Packaging
- How to Find Cosmetic Batch Codes and Lot Numbers on Packaging
- What If There Is No Batch Code on the Cosmetic Package?
- Cosmetic Production Date Meaning: MFG, Expiry & PAO
- Why a Cosmetic Batch Code Is Not Found — What to Check Next
- Why Your Batch Code Result Shows Only Year and Month
- Why the Box Code and Bottle Code Can Be Different
Track opened products in the app
Use the app to save results, manage opened dates, and avoid losing track of older backups.