Calendula oil is a natural oil extracted from marigold flowers (Calendula officinalis). It's often used as a complementary or alternative treatment. Calendula oil has antifungal, anti-inflammatory, and antibacterial properties that might make it useful in healing wounds, soothing eczema, and relieving diaper rash. Calendula is a plant. The flower is used to make medicine. Calendula flower is used to prevent muscle spasms, start menstrual periods, and reduce fever. Calendula is applied to the skin to reduce pain and swelling (inflammation) and to treat poorly healing wounds and leg ulcers. The flower petals impart their yellow color to food, so dried calendula is often used as a substitute for saffron. Other culinary uses depend on whether you like the flavor of the flowers or leaves.The leaves have a spicy taste and make good flavorings for soups and salads, according to Cornell University