For the OP, I answer by saying I don't use any fragrance oils, I only use essential oils. If the person (usually not a customer) keeps on the track I say something like "I blend all my own essential oils for my scents. I get them from various suppliers." If the person is asking for a specific formula "Could you tell me how you make this? I also make salves and would like to sell it too." (which I swear happened last week on tumbler.) I say "Well, like my grampa taught me get out your biggest oldest cauldron, add a goodly amount of various herbs, some oil that you like and heat it for a while. Strain then add your wax..." It's humorous but doesn't really say much about what I am doing but I hope isn't rude. I list all my ingredients on my labels, more then I am required to do by law, I list if things are organic and use the latin names so they are universal. More then that and the person asking can pay my student loans for the education I have to learn how to create such products.