Oooops. I read this thread but replied to the other. Here's what the site said about sunflower oil. I've used info from this site as a general rule of thumb but don't know how accurate it is.
Sunflower Oil Sunflower oil is a less expensive alternative to olive oil. It contains Vitamin E, so it naturally resists going rancid (Vitamin E is a preservative). Despite that, don't store it longer than six months. It is a less saturated oil so you want to combine it with other, more saturated, oils -- try to avoid using more than about 15-20% sunflower oil. It can make your soaps take longer to trace and to harden. Use as a Base oil up to 20%
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