How much fo/eo to put in a bath bomb?

[Jessrof]

Title says it all. Going to try my hand at some bath bombs... would like to use eos... how much should I add per bomb? Should I add it to the whole mixture or in the center of each bomb?

 

[lsg]

I would add the essential oil to the whole bath bomb, it wouldn't be as concentrated that way. For three and a half cups of dry material I would add .5 oz of essential oil. Here is a recipe from the Soap Queen.

http://www.soapqueen.com/bath-and-body-tutorials/bath-fizzies/how-to-use-our-bath-bomb-maker/