Olbas Inhaler Stick is a powerful decongestant relief for blocked noses on the go. It contains essential plant oils with decongestant properties to help provide symptomatic relief from blocked sinuses, catarrh, hay fever, colds and flu. Olbas Inhaler Stick contains active plant oils such as Cajuput Oil, Eucalyptus Oil, Levomenthol, and Peppermint Oil that are known for its effective decongestant relief.