Nut oil refers to natural vegetable oils extracted from the kernels of various woody nuts (such as macadamia, argan, hazelnut, walnut, etc.) through physical pressing or extraction processes. It is renowned for being rich in monounsaturated and polyunsaturated fatty acids that closely resemble human sebum, as well as natural vitamin E and phytosterols. This ideal fatty acid composition allows nut oil to rapidly penetrate the skin, making it a core base oil in modern high-end skincare and hair care products, valued for its moisturizing, repairing, and antioxidant properties.