I use it at 5% in my doggie soap, and I use a bunch of EOs to help drown out the horrible smell. It doesn't seem to fade that much to my nose.Thank you! I'd love to hear if your sister finds it effective.
Today I tried a diagonally divided soap for the first time. Fingers crossed that it works out. I made a confetti layer for the bottom part of the diagonal, and an ITP for the top part. Fragrance is Japanese Musk which is apparently a Body Shop dupe?