Guides

Practical help for finding batch codes, reading product dates, understanding PAO and storing cosmetics and fragrances.

What Is a Batch Code?

Learn what cosmetic batch codes identify, what a decoder can estimate, and what a code cannot prove.

Find the lot code on perfume, skincare tubes, jars, lipstick and makeup without confusing it with a barcode or PAO mark.

A practical guide to unopened age, PAO symbols and signs that makeup or skincare should be replaced.

Understand how storage and oxidation affect fragrance, and when a change in smell or appearance matters.

Protect makeup, skincare and fragrance from heat, light, moisture and contamination.

Check printed dates, PAO markings, storage damage and replacement signs without relying on a batch code alone.

Sort packaging safely and use local disposal guidance for leftover cosmetics, aerosols and nail products.

Understand plain dates, coded production lots and manufacturer-specific formats before entering a code.