Macadamia nut oil comes from the nuts of the macadamia tree. Its fat makeup sets it apart. It holds 55 to 65 percent oleic acid and 15 to 20 percent palmitoleic acid. Both are monounsaturated fats.
People swap it for fats with a less helpful profile during cooking. The oil has a gentle, buttery taste and a high smoke point. Others apply it directly to skin and hair to help lock in moisture. You can also find it as a liquid supplement or in capsules.
A common daily amount runs from 1 to 2 tablespoons, taken alongside meals. For skin and hair, people smooth on a small amount as needed.
Cautions: The oil packs a lot of calories. Anyone with a tree nut allergy should avoid it. Drug interactions remain largely undocumented, but you should speak with a doctor before making it a regular supplement.