Wear routines
How to make perfume samples last longer
For samples, separate how long the liquid supply lasts from how long one application stays perceptible. Keep the tester secure and identifiable and use its directions; a small container does not create its own weak or strong fragrance class.
A HUME Fragrance buying guide

Protect the remaining product
Keep the closure secure and store the sample appropriately. Retain its exact name rather than transferring it into an unlabelled container.
Make each trial informative
Use one candidate at a time and record the application and later experience. Testing several unfamiliar samples together can consume product without clarifying a favorite.
Avoid dose assumptions
A sample atomizer and full bottle can deliver different amounts. Do not infer a guaranteed number of wears from volume or mechanically transfer a spray routine between them.
Try this before you buy
Keep separate notes for the tester's remaining supply and the experience from each planned wearing trial.