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Pillar I · The Inkey List Batch Code Checker

The Inkey List Batch Code Checker — lot number & freshness guide

Lot Stamp (Date Not Encoded) · [Lot number, 3–12 letters or digits][Production date not publicly encoded] · checked privately in your browser.

Lot Stamp (Date Not Encoded) · Houses without a published date code
[Lot number, 3–12 letters or digits][Production date not publicly encoded] · e.g. L24105

Product
Format Test Codes:
Box Crimp vs. Flacon Base Inspection
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Batch code location guide: outer box base crimp vs. flacon glass base Technical diagram for The Inkey List showing where the batch code L24105 is stamped on the outer box base crimp and on the flacon base, and the matching verification points. A · OUTER BOX — BASE CRIMP STAMP Embossed / inked on the bottom flap seam The Inkey List L24105 1 EMBOSSED CODE ON CRIMP SEAM 2 UNIFORM DEPTH · NO INK SMUDGE B · FLACON — GLASS BASE ETCH / DIP-TUBE STICKER Laser etch, inkjet print or clear sticker under the base COMPOUNDED — — L24105 3 CODE IDENTICAL TO BOX CRIMP 4 CRISP ETCH · STRAIGHT BASELINE MUST MATCH

Where The Inkey List stamps its code: outer box base crimp + flacon base

Usually embossed on the carton flap or crimp and ink-jetted or embossed on the bottle, jar or tube base.

  1. Read the code off the box base crimp in raking light — authentic embossing has uniform depth.
  2. Read the flacon base or label code and enter it above — the two must match character for character.
  3. Check for scraped, re-embossed or stickered-over crimps: a classic way to hide aged gray-market stock.
Printable guideWhere to Find Your Code (Tap to Zoom) ↓ Download WebP
Lot Stamp (Date Not Encoded) batch code plate: where The Inkey List and the other Houses without a published date code houses stamp the code, and how L24105 decodes
Plate I — Lot Stamp (Date Not Encoded) (Houses without a published date code): [Lot number, 3–12 letters or digits][Production date not publicly encoded], e.g. L24105. Used by Tatcha, Ole Henriksen, Sunday Riley, Summer Fridays, Glow Recipe and 612 more. Read it on the box base crimp and the flacon — the two codes must match.

Parent Conglomerate Pattern · Houses without a published date code

How The Inkey List Codes Are Structured

Pattern
Lot Stamp (Date Not Encoded)
Group
Houses without a published date code
Structure
[Lot number, 3–12 letters or digits][Production date not publicly encoded]
Length
3 or 4 or 5 or 6 or 7 or 8 or 9 or 10 or 11 or 12 characters
Stamped On
outer box base crimp · flacon base
Confidence
Reference only — the code identifies the production lot, but no production date can be read from it. Use the printed EXP / MFD date or the PAO symbol, or ask the brand to date the lot number.
Reported Notes
British ingredient-led clinical skincare and scalp care brand with 78 product ingredient lists analyzed on SkinCarisma (including Omega Water Cream scoring 100/100 Excellent, Bio-Active Ceramide Repairing and Plumping Moisturizer scoring 98/100, Caffeine Eye Cream scoring 97/100, SuperSolutions 10% Azelaic Serum Redness Relief Solution scoring 97/100, Starter Retinol Serum scoring 96/100, Oat Cleansing Balm scoring… (reported, not verified by Beauty.net)

Worked Decode · L24105 → Not date-encoded

Lot number L24105 Production lot (date not encoded)
Sample CodeProduction DateVerdict (as of November 2026)
L24105Not date-encodedLot Recorded — Check the Printed Date
3145ANot date-encodedLot Recorded — Check the Printed Date
B2209ANot date-encodedLot Recorded — Check the Printed Date

The Inkey List has not published how its lot code encodes the production date, so no date is estimated. Read the printed EXP / MFD date or the PAO (open-jar) symbol, or give the lot number to the brand's customer service.

Beauty.net does not estimate dates for houses without a published code structure. Reported notes: batch-code reference, not verified by Beauty.net. A valid format never proves authenticity.

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Section V · Formulation Audit

Audited Formulations From The Inkey List

Field Notes

Frequently Asked Questions

Can I decode a The Inkey List batch code?

The Inkey List has not published how its lot code encodes the production date, so Beauty.net records the lot number and checks its format but does not estimate a date. Reported notes (from the batch-code reference cited below, not verified by Beauty.net): British ingredient-led clinical skincare and scalp care brand with 78 product ingredient lists analyzed on SkinCarisma (including Omega Water Cream scoring 100/100 Excellent, Bio-Active Ceramide Repairing and Plumping Moisturizer scoring 98/100, Caffeine Eye Cream scoring 97/100, SuperSolutions 10% Azelaic Serum Redness Relief Solution scoring 97/100, Starter Retinol Serum scoring 96/100, Oat Cleansing Balm scoring… To check freshness, read the printed EXP or MFD date or the PAO (open-jar) symbol, or give the lot number to The Inkey List customer service. A correctly formatted code never proves authenticity.

Where is the batch code stamped on a The Inkey List box and bottle?

Usually embossed on the carton flap or crimp and ink-jetted or embossed on the bottle, jar or tube base. Look on the outer box base crimp and the flacon base. The code on the box and the code on the flacon must match character for character; a scraped, re-embossed or stickered-over box crimp is a classic sign of aged gray-market stock.

How long does The Inkey List last and where can I buy fresh-batch authentic products in Singapore?

Unopened, The Inkey List skincare is a fresh batch for 24 months from production and should be used within about 36 months, as vitamin C, retinoids and peptides degrade with time. In Singapore, buy from The Inkey List authorised counters and the brand's official online store, and check that the printed EXP / MFD date is recent before you pay.