- Aug 25, 2011
I think the word 'guidelines' is key here. As far as I'm aware there are no specific regulations governing the composition and labelling of concentrations.Thanks! And exactly. I suspect the true differences in the categories are deep, mostly qualitative, and much more obvious to perfumers than to us. Quantitative guidelines thus being more of an annoyance than a constraint to them and their creative and evaluative handlers.