As for your hair, colourist Chad Kenyon agrees that coconut oil isn't great. "Raw coconut oil is extremely unpredictable in how it reacts when used as a topical treatment for human hair, both coloured and virgin hair," Kenyon said. "Coconut oil often penetrates the hair cuticle more than many other oils found at the supermarket, but that is not necessarily a good thing. It is simply not compatible with most, if not all, professional salon hair colouring." He added that coconut oil has turned his clients' colour brassy or flat.