Where is the batch code on a perfume bottle or a cosmetic product?

A batch code is a short combination of 3 to 8 letters and digits. It is laser-etched under the glass, ink-jetted on the base, or embossed under the box flap. It is not the 13-digit barcode: the EAN identifies the product on a shelf, the batch code identifies when it was made.

How do I check how old a cosmetic is from its batch code?

Find the 3 to 8 character code under the bottle or under the box flap, then type or scan it into CosmeScan. The tool calculates the manufacturing month, the age of the formula and the remaining shelf life, across 4,155 brands. The decoding runs in your browser, no photo is sent to a server.

How do I read a Dior, Chanel, Guerlain or L'Oréal batch code?

At LVMH (Dior, Guerlain, Givenchy) the code is 4 characters, for example 4B01. The first one is the last digit of the year, the second is the month with the letter I skipped (A is January, B is February). At L'Oréal (Lancôme, YSL, CeraVe) the third letter of a 6 character code carries the year: 38Z401, with X for 2024, Y for 2025 and Z for 2026. At Estée Lauder (MAC, Tom Ford) it is the third digit of a 3 character code, for example AB5. Every house has its own rule, and some do not decode publicly.

How can I tell if a perfume has gone off?

A perfume does not turn all at once like food. Its top notes oxidise with air, light and heat. CosmeScan sorts freshness into three states: fresh under 24 months, watch between 24 and 36 months, past it beyond 36 months. Three years after opening, citrus fades and the alcohol can turn. The little jar symbol on the label gives the exact figure for your product.

What is the ten-year batch code cycle?

The big houses reuse their sequences every ten years: 9P01 can mean February 2019 or February 2009. The vintage mode in CosmeScan switches between a current bottle and a collector from the 2010s. When two dates remain possible, CosmeScan shows the result as ambiguous instead of picking one at random.

How do I reassure a buyer about the freshness of a perfume I am selling?

CosmeScan generates a 1080 × 1080 dating card with the batch code, the manufacturing date calculated from that code and a verification link. The link takes the buyer back to the brand page and to any recall on record. The card is built for a Vinted, eBay, Leboncoin, Vestiaire or Mercari listing. It documents the dating, it is not an expert appraisal and it does not establish authenticity.

LVMH • Fragrance & Skincare

Decodificatore Codice Lotto e Freschezza Guerlain

Decodificatore gratuito del codice lotto Guerlain (3K02 (4 chars), LVMH). Calcola la data esatta di produzione, durata PAO (24 mesi) e richiami EU Safety Gate su CosmeScan.

Quick Guerlain Batch Verification

Decode Batch Code

Hai dubbi su questo flacone Guerlain acquistato di seconda mano? Avvia un Legit Check IA gratuito in 5 foto (erogatore, ghiera, fondo e codice inciso).

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Guerlain Technical Decoding Rules

Batch Code Format	`3K02 (4 chars)`
Code Location	Sotto la base del flacone o in basso sul retro della confezione
Period After Opening (PAO)	24 months
Unopened Shelf Life	36 months

⚠️ Decennial Batch Cycle (Vintage Mode) : Guerlain recycles its batch codes every 10 years. CosmeScan includes a 1-tap Vintage Mode switch.

Esempi di Codici Lotto Guerlain per Anno (2026 / 2025 / 2024)

Batch Code	Year	Status (36M Unopened)
`6A01`	2026	✓ Fresh (Valid until 2029)
`5B01`	2025	✓ Fresh (Valid until 2028)
`4C01`	2024	⚠ Check PAO (Valid until 2027)
`2A01`	2022	✕ Past 36M Unopened Window

FAQ Answer-First — Guerlain

Dove si trova il codice lotto su un flacone o prodotto Guerlain?

Per Guerlain (LVMH), il codice lotto si trova generalmente qui: Sotto la base del flacone o in basso sul retro della confezione. È distinto dal codice a barre EAN-13.

Qual è il formato del codice lotto Guerlain e come leggerlo nel 2026?

I codici lotto Guerlain seguono il formato 3K02 (4 chars) (es. 6A01 per il 2026, 5B01 per il 2025). Inserisci il codice su CosmeScan per decodificare mese e anno di produzione.

I prodotti Guerlain scadono e qual è la loro durata di conservazione?

Sì, i prodotti Guerlain scadono: sono garantiti circa 36 mesi prima dell'apertura (dalla data di produzione del codice lotto) e 24 mesi dopo l'apertura (indicazione PAO).

Come riconoscere se un profumo o cosmetico Guerlain è originale o falso?

Per verificare l'autenticità di Guerlain: (1) Il codice lotto sul flacone deve coincidere con quello sulla scatola (3K02 (4 chars)), (2) La ghiera dello spray deve essere montata a macchina senza sbavature, (3) Utilizza l'audit gratuito di CosmeScan per verificare la data di produzione e segnalare seriali contraffatti.