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I have not found any whitening properties of tea tree oil but it can help prevent tooth discolouration and I have seen toothpaste with tea tree oil sold in shops. Jain et al. (2014) states: Tea tree oil’s major active component is terpinen-4-ol (30%–40%). This compound is responsible for its antibacterial and antifungal properties [(Arweiler, et al. 2000)]. ...


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