I once had someone tell me that they use 4-5 oz. of fragrance per pound of paraffin wax (to make melts). I swore they must be crazy. I am making soy wax tarts and started at 9% fragrance load, but didn't get a decent throw. So I went up to 13% on my latest batches and they are stronger, but still not where I'd like them to be. The wax seems to be holding the fragrance in (i.e. no "leeching" out). Does anyone go up to 20% or so? If it matters, these are fragrances that have been tested in soy by the suppliers and were rated to work well in this medium. And I have heard other chandlers rave about them too. I am dumb-founded!!!