when website calculators are missing your EO?

[Zing]

Soap peeps,
I routinely use eocalc and Bramble Berry's calculators for usage rates for essential oils. Sometimes they don't include certain ones. Today I used marjoram which is not on either site. Do folks use other resources? And if your essential oil is not on any resource, do you have a rule of thumb for usage rate? Thanks,

 

[AliOop]

Tisserand and Young's "Essential Oil Safety" is the go-to resource; it's a bit pricey, but your library might have it (if it is open). Their website has a free EO safety class, but I don't know whether they would include marjoram as one of the oils discussed.

Sometimes I can also find info on Hopewell Essential Oil's website.

 

[lsg]

The supplier should list the maximum safe usage percentage.

 

[Mobjack Bay]

Try Aromaweb.com. I learned about it from @Zany_in_CO I think. Here’s the link to the page on marjoram EO. I gave in and bought the Essential Oil Safety book for reference after buying basil EO and a few others that are safe only at fairly low levels.