Rosemary oil has a powerful, refreshing herbal smell with the appearance of clear water and a viscous texture . Rosemary oil has been shown to be beneficial in the treatment of certain medical problems such as acne, baldness, rheumatic pain, and circulatory blockages. Tea tree oil, also known as melaleuca oil, is an essential oil that comes from steaming the leaves of the Australian tea tree. When used topically, tea tree oil is believed to be antibacterial. Tea tree oil is commonly used to treat acne, athlete's foot, lice, nail fungus and insect bites.