What is “refined” oil? What are the differences between physical refining and chemical refining?
An oil has been refined by using chemicals that are harmful to us. In short it means to ‘purify’. But the meaning of purify has many definitions. It may mean the oil was treated with acid, or purified with an alkali, or bleached. It can also be neutralized, filtered or deodorized. All of which require chemicals like Hexane!