Immediate Relief For Catarrh, Colds and Sinuses. Olbas is a mixture of essential pure plant oils originated in Switzerland for relief of bronchial and nasal congestion and hayfever by inhalation, and for symptomatic relief of muscular pain by application to the skin. Non greasy. IngredientsActive Ingredients w/w: Cajuput Oil BPC 18.50% Clove Oil EP 0.10% Eucalyptus Oil EP 35.45% Juniperberry Oil BPC 2.70% Levomenthol EP 4.10% Dementholised Mint Oil BP 35.45% Wintergreen Oil BPC (1949) 3.70%