The olive leaf (botanical name Olea europea) has been used for centuries as a remedy for a variety of ailments. The ancient Greeks used it to treat fevers and infections, and it was also used in traditional Chinese medicine. In recent years, olive leaf extract's topical uses have been shown to be effective in treating a wide range of conditions, including psoriasis, eczema, acne, cold sores, and other viral infections. Oleuropein and luteolin, compounds found in olive leaves, are of special interest to modern scientists for their powerful antioxidant, anti-inflammatory, and antiviral properties.