K18 Hair batch code & expiration date

Where to find your K18 Hair batch code

The K18 Hair batch code is a short, usually embossed stamp of letters and numbers — never the barcode. Here’s what it looks like on typical packaging (the code is the short embossed stamp, not the long barcode):

A genuine K18 Hair code looks like CH26112A or LT26023-6 or CM26141 — usually embossed, not the barcode.

The K18 Hair batch code — also called the lot code, lot number or serial number — is a short 4–8 character stamp of letters and numbers, usually embossed rather than printed in ink, and it is never the barcode. On a bottle or jar look at the base; on a tube look near the crimp/seal at the end; on a boxed perfume or fragrance check a flap or side of the box; on makeup check the underside of the compact or inside the pan.

• Bottle / jar — stamped on the base.
• Tube — near the crimp or seal at the closed end.
• Boxed fragrance — a flap or side of the outer box (and often on the bottle base too).
• Compact / palette — the underside, or inside the pan.

About K18 Hair batch codes

K18 Hair codes encode a 2-digit year plus the day of the year.

Real documented examples: code → manufacture date.

Most unopened cosmetics and fragrances keep for about 30–36 months from manufacture. Once opened, follow the PAO (open-jar) symbol — it usually matters more than any printed expiration date.

We've read 6 K18 Hair batch codes so far, the newest was made May 2026, and the typical K18 Hair product people check here is about 44 months old.

Can the batch code tell me if my K18 Hair is authentic? Not on its own. A code that decodes to a sensible date is a good sign, but counterfeiters copy real codes from genuine packs, so a valid code cannot prove a K18 Hair product is authentic. Buy from K18 Hair or an authorised retailer, and compare the packaging, print quality and seal with one you know is genuine.

Does K18 Hair expire?

Yes — like all cosmetics and fragrances, K18 Hair products have a limited shelf life. Unopened they typically last 30–36 months from the manufacture date, and the batch code above tells you how old yours already is. After opening, the PAO (open-jar) symbol — e.g. "12M" — is a better guide than any printed expiration date.

How long K18 Hair products last

Unopened: general cosmetics guidance. Opened: general guidance by product type. A date or open-jar symbol on your pack always wins.

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