Projection comparisons
How to compare the projection of oil perfumes
Compare oil perfume projection through the exact finished product and application rather than assuming the carrier guarantees a quiet or powerful result. Contact application and atomized application are different mechanisms, not automatically equal doses.
A HUME Fragrance buying guide

Confirm intended personal use
Read the actual cosmetic's directions. A raw fragrance material or home-scent oil is not interchangeable with a finished perfume oil for a wearing trial.
Describe the application honestly
Record roller, dabber or other supplied mechanism. Avoid inventing a drop-to-spray conversion when comparing another format.
Use contextual noticeability
Ask a willing observer in an appropriate setting if useful, and record their description separately from your own later close-range impression.
Try this before you buy
Compare the exact products as whole experiences while noting that their application amounts may not be equivalent.