Grapeseed oil is obtained from grape seeds. Although grapes are one of the most popular fruits in the world, almost everyone gets rid of their seeds, but experts say that these seeds are actually the healthiest part of the grape. The seeds contain powerful antioxidants and natural plant compounds known as oligomeric proanthocyanidin, or OPC. . Grapeseed oil is popular for cosmetic purposes. You can even find it as an ingredient in products on store shelves, in sunscreens, moisturizers and a. It is believed to help repair the skin and has antiseptic properties as well as being mildly astringent. The oil has many benefits for skin and hair health.