Marula oil comes from the marula fruit tree (Sclerocarya birrea). The oil primarily comes from the kernels of the tree. It is pale yellow and has a slightly nutty scent. Though marula oil is becoming a more popular ingredient in cosmetic products, it has been used by people as a food, medicinal treatment, and moisturizer, as well as in traditional rituals. Many cosmetic products contain marula oil. The oil has amino acids, fatty acids, and antioxidants that may benefit the hair, skin, and nails.