Perfume Creation: How Focus Groups Work

If you've been reading about perfume and fragrance creation for some time (and if you've been following the Perfume Shrine specifically) you must have come across the mention of focus groups, employed by large companies like L'Oreal or such, to test the "mods" supplied by the laboratory in order to gauge whether the perfumer and his/her team should go back to the drawing board or not. I have