Metered Dose Olive Oil Spray with Tea Tree Oil, 10ml A metered dose spray of pharmaceutical-grade olive oil, tea tree oil and mineral oil to protect ears from water trapping while swimming. EarolSwim® acts as an invisible ear plug, protecting the ears from water ingress during water-based activities such as swimming, scuba diving and even showering. Particularly when swimming in unhygienic water, preventing water trapping, which could lead to Otitis Externa and other bacterial infections in the ears is highly important, and EarolSwim® makes this possible. Applied before entering the water, EarolSwim® is clinically proven to reduce the incidence of trapped water in the ears, soothe irritation and help reduce the feeling of fullness in the ears.