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.

我的梳妆台与PAO保质期管家 — CosmeScan

记录您的香水与护肤藏品，自动追踪开封后保质期（PAO）并接收到期预警。

🔍 在线批号查询工具 • 🌐 全部4155个品牌 • 🚨 欧盟Safety Gate召回警报

CosmeScan的作用

CosmeScan通过瓶身或外盒刻印的生产批号（如迪奥 6B01、香奈儿 1601、兰蔻 38Z401）即时计算出厂年月、开封保质期（PAO）及欧盟Safety Gate安全警报，并支持生成闲鱼、小红书与得物转售验真凭证。

主要美妆集团生产批号解析规则

美妆集团 / 品牌	批号示例	解码规则
LVMH (Dior, Guerlain, Givenchy, Kenzo)	`6B01`, `9P01`	第1位数字＝年份（6=2026年，5=2025年），第2位字母＝月份（A=1月，B=2月）
L'Oréal (Lancôme, YSL, Armani, CeraVe, La Roche-Posay)	`38Z401`, `20Y201`	前2位为产地代码，第3位字母＝年份（X=2024，Y=2025，Z=2026），第4位＝月份（1-9, O, N, D）
Estée Lauder (MAC, Tom Ford, Clinique, Jo Malone)	`AB5`, `A16`	第1位批次，第2位＝月份（1-9, A=10月, B=11月, C=12月），第3位数字＝年份（4=2024, 5=2025, 6=2026）
Chanel	`1601`, `9201`	4位数字月度顺序递增编码（每10年循环一次）
Coty & Puig (Calvin Klein, Rabanne, Jean Paul Gaultier, Chloé)	`6032`, `50821`	第1位数字＝年份尾数＋后3位数字＝当年第几天（儒略日 001至365）

核心功能特性

收录 4,155 个美妆品牌： 支持相机光学识别生产批号与毫秒级出厂日期解析。
十年周期（Vintage 古董模式）识别： 精准区分迪奥、香奈儿、娇兰等每10年循环一次的批号。
欧盟 Safety Gate 安全召回雷达： 实时核验欧盟 RAPEX 通报及新铃兰醛（Lilial / BMHCA）禁用名单。
闲鱼、小红书与得物转售验真卡： 一键导出 1080×1080 高清防伪与新鲜度鉴定证书。
智能梳妆台与 PAO 开封保质期追踪： 实时倒计时并在到期前 60、30、7 天发送提醒。

CosmeScan的作用

主要美妆集团生产批号解析规则

核心功能特性

热门品牌批号查询（收录4155个品牌）