Pillar I · SENSAI Batch Code Checker

SENSAI 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.

House, Brand or Fragrance

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

Batch Code (Box Base Crimp) Bottle Bottom Code (optional — check if box & bottle match)

Product

Format Test Codes:

Box Crimp vs. Flacon Base Inspection

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Where SENSAI stamps its code: outer box base crimp + flacon base

Stamped on the bottom of Cellular Performance and Absolute Silk jars/bottles, top crimp of Silky Purifying cleanser tubes, and base of outer cartons

Read the code off the box base crimp in raking light — authentic embossing has uniform depth.
Read the flacon base or label code and enter it above — the two must match character for character.
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 SENSAI 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 SENSAI 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: Kao / Kanebo 4-digit numeric Julian lot code where the first 3 digits = Julian day of year (001–365) and the 4th digit = last digit of manufacture year (such as '0712', '2382', or '2982') (reported, not verified by Beauty.net)
Where to Look: Stamped on the bottom of Cellular Performance and Absolute Silk jars/bottles, top crimp of Silky Purifying cleanser tubes, and base of outer cartons

Worked Decode · L24105 → Not date-encoded

Lot number L24105 Production lot (date not encoded)

Sample Code	Production Date	Verdict (as of November 2026)
L24105	Not date-encoded	Lot Recorded — Check the Printed Date
3145A	Not date-encoded	Lot Recorded — Check the Printed Date
B2209A	Not date-encoded	Lot Recorded — Check the Printed Date

SENSAI 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.

Searchable in the Decoder

Popular SENSAI Products

sensai
sensai kanebo
sensai cellular performance
sensai silky purifying
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Section V · Formulation Audit

Audited Formulations From SENSAI

Silky Purifying Cleansing Oil (Paraffinum Liquidum + Triethylhexanoin + PEG-20 Glyceryl Triisostearate + Sweet Almond & Argan Oils + Koishimaru Hydrolyzed Silk) →
Barrier / Peptide / Hydrator · PEG-20 Glyceryl Triisostearate, Sweet Almond/Argan Oil & Koishimaru Silk Step-1 Cleansing Oil

Skincare is best used within about 36 months of production and 6–12 months of opening.

Field Notes

Frequently Asked Questions

Can I decode a SENSAI batch code?

SENSAI 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): Kao / Kanebo 4-digit numeric Julian lot code where the first 3 digits = Julian day of year (001–365) and the 4th digit = last digit of manufacture year (such as '0712', '2382', or '2982') To check freshness, read the printed EXP or MFD date or the PAO (open-jar) symbol, or give the lot number to SENSAI customer service. A correctly formatted code never proves authenticity.

Where is the batch code stamped on a SENSAI box and bottle?

Stamped on the bottom of Cellular Performance and Absolute Silk jars/bottles, top crimp of Silky Purifying cleanser tubes, and base of outer cartons 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 SENSAI last and where can I buy fresh-batch authentic products in Singapore?

Unopened, SENSAI 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 SENSAI authorised counters and the brand's official online store, and check that the printed EXP / MFD date is recent before you pay.