For those who are serious about wanting supple, glowing skin—it’s time to invest in a good oil. Oils are so spectacular for the skin for a few reasons: First, many types can act as emollients, which means they soften and repair the skin with things like fatty acids, ceramides, and other lipids. But they also have occlusive properties, so they sit on the skin, creating a barrier—keeping hydration underneath and helping shield the skin from environmental stressors.