Pistachio oil can be rephrased as oil derived from pistachios. Pistachio oil is a potent antioxidant. It helps the body counteract free radicals, helping to prevent key molecules in the skin cells from becoming damaged. Pistachio oil has a high concentration of vitamin E, a fat-soluble antioxidant that has many other properties besides the best one: fighting free radicals. As per ayurveda, Pistachio oil can also be applied on the skin to help prevent sunburn due to its Ropan (healing) nature.