That particular oil, being made of mostly natural oils, would probably be okay if you know your vagina can handle oils.
Natural oils wash away easily as opposed to petroleum based oils.
However, any oil in the vagina can be iffy and the cocoa butter could also make it difficult to rinse away, upsetting the balance you need to keep a healthy cooch so...
My advice? Don't stress it overly much if some gets in the area but don't intentionally use it as a lube, either.