You should only eat the virgin coconut oil.
This is the whole oil extracted from the flesh of the coconut and has not been refined or processed in any way.
Fractionated coconut oil is literally just a ‘fraction’ of the complete oil.
The highly prized component of coconut oil, the lauric acid, has antimicrobial properties, and as such, is used as a natural preservative and removed from virgin oil.
What is left behind is a liquid oil that will not turn solid, a ‘fraction’ of the original oil.
The good fats remain and the bad fats are removed making it a beautiful carrier oil.