Pillar I · Beauty of Joseon Batch Code Checker
Beauty of Joseon 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
Where Beauty of Joseon stamps its code: outer box base crimp + flacon base
Embossed on the top crimp seal of Relief Sun: Rice + Probiotics SPF 50+ PA++++ and Revive Eye Serum tubes, or ink-jet printed on the bottom base of Glow Serum (Propolis + Niacinamide) and Ginseng Essence Water bottles.
- 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
Parent Conglomerate Pattern · Houses without a published date code
How Beauty of Joseon 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
- Beauty of Joseon (Goodai Global Inc.) prints a 4-to-7-character alphanumeric factory lot code (typically from Kolmar Korea or Cosmax GMP lines) alongside an explicit Korean YYYY.MM.DD manufacture (제조) and expiration (사용기한 / 까지) date on every tube crimp, dropper bottle base, and outer box. Unopened Relief Sun SPF 50+ tubes, cleansers, and essences last 36 months (24 months for Glow/Calming/Revive serums); observe the… (reported, not verified by Beauty.net)
- Where to Look
- Embossed on the top crimp seal of Relief Sun: Rice + Probiotics SPF 50+ PA++++ and Revive Eye Serum tubes, or ink-jet printed on the bottom base of Glow Serum (Propolis + Niacinamide) and Ginseng Essence Water bottles.
Worked Decode · L24105 → Not date-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 |
Beauty of Joseon 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 Beauty of Joseon Products
- beauty of joseon
- boj
- beauty of joseon relief sun
- beauty of joseon glow serum
- beauty of joseon revive eye serum
- beauty of joseon ginseng essence water
Section V · Formulation Audit
Audited Formulations From Beauty of Joseon
-
Relief Sun: Rice + Probiotics SPF50+ PA++++ →
Photoprotection · Chemical Sunscreen (SPF50+)
Skincare is best used within about 36 months of production and 6–12 months of opening.
-
Revive Eye Serum: Ginseng + Retinal →
Retinoid · Retinal Eye & Face Serum
Retinoids degrade with light and air: prefer a recent batch in opaque, airless packaging.
Field Notes
Frequently Asked Questions
Can I decode a Beauty of Joseon batch code?
Beauty of Joseon 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): Beauty of Joseon (Goodai Global Inc.) prints a 4-to-7-character alphanumeric factory lot code (typically from Kolmar Korea or Cosmax GMP lines) alongside an explicit Korean YYYY.MM.DD manufacture (제조) and expiration (사용기한 / 까지) date on every tube crimp, dropper bottle base, and outer box. Unopened Relief Sun SPF 50+ tubes, cleansers, and essences last 36 months (24 months for Glow/Calming/Revive serums); observe the… To check freshness, read the printed EXP or MFD date or the PAO (open-jar) symbol, or give the lot number to Beauty of Joseon customer service. A correctly formatted code never proves authenticity.
Where is the batch code stamped on a Beauty of Joseon box and bottle?
Embossed on the top crimp seal of Relief Sun: Rice + Probiotics SPF 50+ PA++++ and Revive Eye Serum tubes, or ink-jet printed on the bottom base of Glow Serum (Propolis + Niacinamide) and Ginseng Essence Water bottles. 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 Beauty of Joseon last and where can I buy fresh-batch authentic products in Singapore?
Unopened, Beauty of Joseon 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 Beauty of Joseon authorised counters and the brand's official online store, and check that the printed EXP / MFD date is recent before you pay.