@drifting,Probably doesn't matter much so long as you make sure that it is certified as unrefined.
This should ensure that it doesn't contain any chemicals.
@drifting, this is the type I purchased and I am very happy with the product. http://www.amazon.com/Shea-Butter-Organic-Unrefined-HDPE/dp/B007B6RR98/ref=sr_1_6/182-6524018-1475157?ie=UTF8&qid=1389360061&sr=8-6&keywords=shea+butter.
They key is that its unrefined and organic. Hope that helps.
Thx!