Madal Bal Tea Tree Australian Oil 25 ml. The substance Terpinen-4-ol is one of the active ingredients of Tea Tree. The legislation notes that the Australian Terpinen-4-ol must exceed 30%, although good quality oils have a higher content. The Australian Tea Tree Oil comes even to values between 38 -44% For direct use: Apply 1 to 3 drops on the affected area as needed. Natural antiseptic, germicide and fungicide. To use: burns, grazes, insect bites, bee agijones, rashes, impetigo, scalds, pimples, sinus problems, sore throat, altleta foot, nail infections, warts, congestion, colds, acne, cold sores, chilblains , varices. As a germicide is thirteen times stronger than carbonic acid.