I am so sorry that I forgot to mention that. Thanks HMLOVE!
I only shred the very top portion of the peel. I do not take the white part under the top skin. (If that makes sense )
I however, do not let it dry because if I do so, the zest dehydrates, discolor and look becomes hard ( unless you want it for a scrubby effect in the soap) I just use it for the great look of it. However, I use a little dry rosemary and basil for the scrubby effect!
Good luck! Do post pictures of what you make and let us know how the zest works for you