Skincare Science

Check cosmetic expiry labels and opening dates before your autumn vanity clear-out

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Key Takeaway

Before clearing your vanity this autumn, read each container's expiry date or period after opening and record when you first opened it. Keep photos of the box and container so you can check the label again.

A Korean woman at a vanity holding an unbranded brown container and looking at its underside, with unbranded bottles and a tube on a cream tray

Which numbers on the container should you read first?

Easy Law's cosmetic labeling guide explains that an expiry date can be shown as a date, while a period after opening can be shown as text and a duration or as a symbol and a duration. Also distinguish the manufacture date shown alongside a period after opening.

Label you findWhat to checkWhat to keep separate in your notes
Expiry date or use-by wordingRead the printed year, month and day, or year and monthCopy the value as printed
Period after opening or its symbolRead the duration beside the text or symbolRecord the actual opening date separately
Manufacture date and batch codeFind the production date and the code identifying the production batchKeep them out of the expiry-date field

Easy Law says batch codes must be displayed so they are easy to distinguish from expiry dates or periods after opening. Read the nearby field name rather than assuming a small string of numbers is a date. If the date order is unfamiliar or the printing is faint, photograph the parts you can read.

How should you record the opening date?

When you open a new cosmetic, follow these steps.

  1. Photograph the container and box so their dates and precautions are legible.
  2. Copy the product name and printed expiry date or period after opening into a note.
  3. Enter the year, month and day you first opened it in a separate field.
  4. Add any specific storage conditions to the same note.

Do not automatically enter the purchase date as the opening date. Leave the opening-date field blank for an unopened product and mark it as unopened. If you are recording several containers, add a name that distinguishes each container to the photo filename or note.

Should you change the storage location in autumn?

The U.S. FDA explains that temperature changes and exposure to sunlight and air can alter cosmetics' color, texture and smell. Moisture in places such as bathrooms can also make microbial growth easier. Compare the current location with the product's storage instructions rather than moving it simply because the season has changed.

Check whether sunlight reaches a container by the window or whether its shelf becomes damp when you shower. Find a location that meets any specific storage instructions. The FDA also recommends avoiding heat exposure, such as in a hot car, and keeping containers and applicators clean. Keep this storage advice distinct from South Korean labeling requirements.

How can two cleansers describe time limits differently?

Check when a period starts as well as its length. These two cleansers use different reference points in their official store information.

ProductTime limit described by the official storeWhat to check in your notes
Beplain Greenful pH-Balanced Cleansing Foam 80 ml30 months from manufacture and 12 months after openingRecord the manufacture date and actual opening date separately
Illiyoon Ceramide Ato Gentle Skin Cleanser 400 mlThe official store ships products with at least 365 days remaining before expiryKeep the remaining time at dispatch separate from a period after opening

Checked on 2026-10-17. Illiyoon's dispatch criterion is a sales condition of its own official store. Check the seller's page and the actual container for the dates on a product ordered through Coupang. Both manufacturers advise storage away from direct sunlight.

What if you forgot the opening date or cannot read the label?

Mark an unknown date as unknown. If you enter today's clear-out date as an older product's opening date, the note will no longer tell you how much time has passed. Order records can help establish when you bought it, but they do not prove when you first opened it.

Photograph the product name, batch code, printed date area and the whole box, then ask the manufacturer what the label means and how to use and store the product. Leave gaps unfilled rather than copying a time limit from another product. Add the response and the date you confirmed it to your original note.

Product information

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Frequently Asked Questions

If a label says 12 months after opening, do I count from manufacture?

Record the period from the day you first open the product. The manufacture date and opening date are different pieces of information. If a date is unclear, check the Korean label together with the manufacturer's instructions.

Where should I look if the box only says the date is marked on the product?

Find the label on the individual container as directed by the box. A set's outer packaging may simply indicate where other items' expiry dates or periods after opening appear. If you cannot find them, send photos of the container and box to the manufacturer.

Can I put my opening-date sticker over the original label?

Use an empty area where it will not cover dates, the batch code or precautions. If there is no room, photograph the container and save the product name and opening date in a phone note.

Sources & Verification Date

  1. Easy Law — Cosmetic labeling standards and methods · Verified
  2. U.S. FDA — Shelf Life and Expiration Dating of Cosmetics · Verified
  3. Beplain official store — Greenful pH-Balanced Cleansing Foam 80 ml product information · Verified
  4. Illiyoon official store — Ceramide Ato Gentle Skin Cleanser 400 ml product information · Verified

All materials have been verified from official announcements and may have changed since verification.

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