Application and care
Does perfume expire
Perfume does not have one universal expiry period for every formula and storage history. Follow any maker-provided expiry or after-opening information and ask about a specific product when its condition concerns you.
A HUME Fragrance buying guide

Use the actual label
Batch information and opening dates can be useful records, but they do not supply a universal usability verdict.
Keep observations proportionate
A colour shift alone does not necessarily establish spoilage. A change in smell, container or performance needs product-specific context.
Avoid home restoration
Do not add water, alcohol or other materials to fix an old scent. Ask the maker if the product seems unsuitable to use.
Try this before you buy
Record when you opened the perfume and its storage history before asking a specific condition question.