Trust

Sources We Reviewed

Every rule on this site traces to the public pages below. None is an official manufacturer document. S-numbers on brand pages refer to this list.

ID	Source	Evidence	Status
S01	BatchCode Checker home (brand directory)	C — Limited	Used
S02	BatchCode Checker — how to find the batch code	C — Limited	Used
S03	CheckCosmetic	D — Weak	Partly accessed
S04	DEV Community — How to Check Cosmetic Batch Code	C — Limited	Used
S05	Makeup For Life — How to tell if your MAC makeup has expired	C — Limited	Used
S06	Qoblex — Check expiry dates from batch codes	D — Weak	Used
S07	Skincarisma batch code checker (Pantene, Olay, MAC, Clinique, Maybelline, Garnier)	C — Limited	Used
S08	Lot Date — Estée Lauder and Clinique pages	D — Weak	Used
S09	CheckFresh — Garnier, Pantene, Olay pages	C — Limited	Used
S10	Scento — Chanel batch code page	D — Weak	Used
S11	Scento — Dior batch code page	D — Weak	Used
S12	Basenotes forum — Decoding Chanel batch codes	D — Weak	Used
S13	GitHub — EthanFajnkuchen/batch-code-decoder	Unknown	Partly accessed
S14	Batch Code Checker (batch-code.com)	D — Weak	Partly accessed
S15	Cosmetic LOT	D — Weak	Partly accessed
S16	CheckBatchCode	D — Weak	Partly accessed
S17	Cosmetic Batch Code Checker (batchcode.info)	D — Weak	Partly accessed
S18	Scento blog — batch code tools for perfume	D — Weak	Reviewed, nothing usable
S19	Chemtronics — How to decipher batch codes	D — Weak	Rejected (out of scope)
S20	Handbag date-code guides (Étoile Luxury Vintage, 1stDibs, LegitApp, Libas Collective, PurseBlog)	D — Weak	Rejected (out of scope)
S21	Mirrored copies of a generic 'L'Oréal batch code' article	D — Weak	Rejected (unreliable)
S22	GitHub topic pages (cosmetics, beauty, beauty-products)	—	Reviewed, nothing usable
S23	batchcode.org (named by S02 and S18)	Unknown	Not opened

We recorded facts only and did not copy source text. Links are provided for transparency and are not endorsements. Accessed 2026-10-12.