Nope you can't. The kitchen extracts do not have enough *umph* to make it through the lye. You are better off using essential oils or fragrance oils. Course you can also make unscented soap... which I did yesterday by not remembering to use the FO that was poured and sitting on the table next to me!
Been there!! Now I always put my EO/FO bottle in the lined mold - I have to remove the bottle before I pour so no more accidental unscented soap (especially made terrible if you just made the most perfect swirls you've ever done!!)
I've quit adding FO at trace for that exact reason. Now I add it to my oils before I add the lye. Unless I'm using a discoloring FO then I add the FO to my swirl portion. I just can't bring myself to make a solid dark brown soap, so I always do a dark brown swirl instead.
You know, I think this very question was my first soapmaking question.....LOL! Now I have a very rapidly growing collection of fragrance oils, cause they are very addicting!
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