Wear-time guides
How long does solid perfume last
Solid perfume wear time cannot be predicted from its balm format alone. Evaluate the finished composition and application, and distinguish lasting on the wearer from how long the product remains usable in its case.
A HUME Fragrance buying guide

Clarify which lifespan you mean
Wear duration is different from storage life or the number of applications left. For product expiry and storage, use the maker's information rather than a general wear-time article.
Record the intended application
Follow the product's method and areas of use. A small amount of one balm is not automatically equivalent to the same-looking amount of another.
Judge close-range experience
Some buyers choose solids for application convenience. Judge the actual scent and presence rather than assuming the format guarantees either weak or long-lasting wear.
Try this before you buy
Keep wear observations and the maker's storage-life information as two separate entries in your notes.