Hi

I am new to perfume making. I was wondering how do I go about determining what ratio of ingredients to use in my formula. I have bought a whole bunch of ingredients, some of which are solids that will need to be dissolved.
I suppose I make a highly concentrated ethanol solution of the soilds to begin with. Some substances eg indole are very potent so I will have to then dilute the concentrated solution to a usable concentration (I expect 1 mL of concentrated indole solution will be very...

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