Quite comprehensive and diverse lot, autumn had arrived with his inconvenience for health, more oils are useful when beginning to have nose or sore throat obstruct (rosemary, peppermint, eucalyptus and others) if is not allergic, I mostly used with the diffuser, sometimes I also use it (some scents like lemongrass, lavender) as a perfume in the aspi, it is enough to soak a cotton and place it in the aspi mine is bagless but ditto bag; Other scents like orange are very pleasant to scent the air drops of ambiant..Peu enough except for the lemon where you need a higher dose for a slightly more pronounced smell ... In any case healthier and more natural than with fragrance diffuser synthèse..Et very good value for money on top of that in a well protected shipment (type plastic bubble)