We use only the finest Tea Tree oil, grown and harvested from sustainable crops in New South Wales. Most importantly, we do not buy our oil from the open market - we have strong links with Australian plantations themselves and that gives us the confidence of knowing we are getting only the best Tea Tree oil. Wherever possible we also use organic Tea Tree oil and other natural ingredients. When it comes to quality control, we ensure that each batch is rigorously tested in accordance with guidelines set by the Australian Tea Tree oil Industry Association. Our standards are so high that every drop of our oil exceeds worldwide industry standards.