Find the official customer-service channel
Start from the brand's official website and choose the country or region where you bought the product. Use its published contact form, email or customer-service number. The company named on the package can also help you identify the responsible contact.
Avoid relying on an address copied from an unrelated batch-checking site. If the brand directs you to a retailer or regional distributor, keep that instruction with the enquiry. This page provides a template; it does not send a message on your behalf.
Photograph the evidence
- One close-up of the code in focus, including any nearby LOT, EXP or other wording.
- A wider photo showing where the marking is on the product.
- The front and back of the product, including the name, variant, size and label instructions.
- The original carton and its code, if you have it.
- The labelled date and PAO symbol, if present.
Leave the package intact. Keep unedited originals, and identify uncertain characters instead of retouching them into a definite reading. If including a receipt, hide unrelated purchases and payment information; provide only what is needed for the enquiry.
Record the missing context
Write down the full product name, shade or fragrance concentration, size, country of purchase, retailer and purchase date. Add whether the item is sealed or opened and the opening date if known. For a sample, refill, gift-set item or decant, describe that presentation explicitly.
If a checker result prompted the question, attach the result and label it as an online estimate. Explain a concrete conflict, such as “I bought this before the estimated manufacture date,” rather than asserting that the product must be fake or expired.
Copy and complete this English template
Replace the brackets before sending. Keep “unknown” where you do not have reliable information. Remove any question that is not relevant to your situation.
Subject: Help identifying a batch marking on [product name]
Hello [brand] customer-service team,
Could you help me identify the marking on this product?
Product name: [full name]
Variant / shade / concentration: [details]
Size and packaging type: [details]
Country of purchase: [country]
Retailer and purchase date: [details or unknown]
Code on the container: [exact text; note unclear characters]
Code on the original carton: [exact text or not available]
Labelled EXP / best-before date: [exact wording or not found]
PAO symbol: [for example, 6M; or not found]
Opened or sealed: [status]
First opening date: [date or unknown]
I have attached photos of the product, code and label.
My question / conflicting online estimate: [brief explanation]
Could you confirm:
1. Whether this marking is the manufacturing batch number?
2. The production date or period, and how precise that is?
3. Which unopened shelf life and after-opening instructions
apply to this exact product in this market?
4. What further information you need if this code is incomplete?
Thank you.Read the reply at the precision it provides
If the brand confirms only a month or year, keep that precision in your record. If it confirms a code is valid, do not expand that statement into confirmation of authenticity, storage history or current safety unless the reply explicitly addresses those questions.
For shelf life, note whether the answer applies to the exact variant, an unopened item and particular storage conditions. Ask one focused follow-up if the starting point of a duration is unclear. The shelf-life guide helps you keep manufacture and opening separate.
If the brand cannot confirm a date
Save the reply with the photos and leave the manufacturing date unknown. Ask whether a different marking, regional team or clearer photograph would help. If the issue is a purchase dispute, keep the retailer's correspondence and receipt as well.
A general answer about the brand's products is not automatically a dated assessment of your individual item. Do not replace an unresolved answer with whichever online estimate looks most reassuring.
Sources and scope
Cosmetics Europe: Understanding the label
European industry guidance on batch identification, label dates and the open-jar symbol; it does not publish decoding rules.
FDA: Shelf Life and Expiration Dating of Cosmetics
U.S. guidance on product deterioration, storage and manufacturer responsibility; it does not validate this checker or any individual product.
Sources support the labelling and shelf-life context. The inspection steps and enquiry template are practical guidance from CosmeticBatchTool, not manufacturer confirmation of an individual item.