Well, all, I realize now that I'm paying for having sampled perfumes only on a strip of paper and briefly on my hand, rather than doing a full wearing. However, I'm now wondering if, as chypre suggest, the IFRA rules could be responsible for these ephemeral designer perfumes. For a Caron EdP to vanish on the skin in less than 2 hours, so much so that you can't even smell it on your hand is ... weird. So I'm conducting comparisons. A Tom Ford on the left hand. A Slumberhouse on the right. An hour and the Slumberhouse still reeks, as it should. The Tom Ford is dying down. I'm going to keep at it until I can either draw conclusions, or discover none can be drawn. Will report.