I've seen some fragrances lately where the IFRA maximum usage was below 2.5% on soap and body products. Will that low of a percentage (if I do the math right, that's less than half an ounce ppo) be enough to fragrance CP soap or should I go with a different fragrance? Also, I have read reviews of a few of these low usage FOs, and a some of the reviewers say they use the more typical 1 oz ppo. So I guess my second question is, how dangerous is that? I don't want to make a soap that smells wonderful but makes your skin fall off. Thank you all for your guidance.