I hope that someone can address my curiosity. I have around 20 artisan soaps across approximately 7 soap makers. Some soap scents, like those made by Mike at Mike's Natural's, smell personally crafted. Several of Mike's soaps have single notes, of course. Other soaps, like several made by Stirling or PAA, are scent dupes and have a more commercial or combined scent where single notes are not really identifiable. Are these scent dupes usually purchased from a fragrance company or are they developed and mixed by the artisans?