The swatches of wool pads can be swapped out if you wish to change to another oil or can simply be removed if you would like to continue to wear the necklace but don't need aromatherapy support. If residue of one oil remains in the locket it can be hand washed in warm soapy water and thoroughly dried.
As always when using essential oils in public places and spaces, please be considerate of those around you. Some individuals are highly sensitive to all scents, even the most natural, others may have reactions to specific types of oils. If you find yourself in a situation where it is problematic to use the oil or blend in the locket, simply remove the wool pad as described above.