One standout characteristic of macadamia nut oil is that it is rich in monounsaturated and polyunsaturated fatty acids while noticeably low in saturated fatty acids. This is what makes it heart-healthy, much like olive oil and coconut oil. As it turns out, such a fatty acids profile is capable of lowering the LDL cholesterol, otherwise known as the bad cholesterol, in the blood. Including macadamia nut oil on a regular basis in your diet helps to balance the body. Macadamia nut oil is also popular as a beauty aid. Because it gets easily absorb by the skin without leaving a greasy and heavy feeling, it can be used on its own as a moisturizer for the skin and hair.