Sample formats
Roll on perfume sample size options
For roll-on perfume samples, compare stated quantity and formulation separately from the roller mechanism. Similar small containers can contain different carriers and fragrances, and there is no standard number of swipes per sample.
A HUME Fragrance buying guide

Verify what is inside
A roller does not automatically establish oil content or alcohol absence. Check the actual product claims alongside the sample's intended use.
Compare the supplied applicator
A roller trial and an atomized decant may answer different handling questions. Do not assume an equal volume means the same amount is applied each time.
Review the complete offer
Check whether the sample is individual, part of a bundle or an empty container. Save the exact fragrance name for any later purchase.
Try this before you buy
List formulation information, sample quantity and supplied roller as separate facts before ordering.