As a fragrance, I'm not completely sure how I feel about this. In no way does it smell natural - it has a definite chemical smell and could never be aped by essential oils etc. That doesn't necessarily rule it out for me though because it smells like candy - bizarrely spicy candy. Like sweet-tarts and cayenne pepper. The pepper itself isn't super distinctive, but there is an underlying element of "hot" that's hard to describe. Out of the bottle I was immediately turned off, but decided to soap with it for the sake of curiosity, and I like it far better IN soap. As to performance, it behaved rather nicely for me. I saw ZERO acceleration (which turned my planned spoon-plop into a drop-swirl, but c'est la vie). When I cut the soap this morning, there was a bit of oily sweat on the bar that I have never had before, but it wasn't much, and I suspect it will absorb back in. So far, I have not seen any discoloration.
One warning though - this fragrance is STRONG. I fragranced with 3% of oil weight and it's just overwhelming - curing in the garage because after 20 minutes that underlying chili spice starts to give me a headache - hopefully that will mellow in the cure. Over all... Not sure whether I will be investing in more of this fragrance and I won't know until I run it by a few other noses - I like it, but probably not enough to make more unless it's well-received elsewhere.