Just uncap the glass bottle, screw back on the top and give a little shake to let the cork top absorb a little oil. Be careful not to tip too vigorously as it may cause spillage. The fragrance strength can be adjusted by how much liquid you allow to absorb into the cork. Once uncapped you must keep the bottle upright at all times.
Vapour Rub Fragrance Oil is a classic fresh scent of eucalyptus and menthol. Perfect to clear a congested nose.