Half a litre of aroma oil in a sealed aluminium bottle is not a domestic purchase. This is the tier a venue buys: enough oil to run a scent machine through a lobby, a showroom or a treatment suite for months, in a container built to keep light off the contents rather than to look good on a shelf.
Seventeen hotel-inspired profiles are available, and each one has its scent structure published rather than left to a single adjective. The Sony profile, for instance, opens on vanilla, moves through violet, and settles on sandalwood and amber — that top, middle and base breakdown is shown in the images for each scent in the range. It is a more honest basis for choosing than "luxurious" or "fresh", particularly when you are committing to half a litre of something.
The oil is intended for aroma diffuser and scent-machine reservoirs, where it is metered out neat rather than mixed into water. Cold-air and nebulising units are the natural fit; if you are running a water-based ultrasonic machine instead, check its manual first, since some are specified for essential oil alone. Whatever the machine, start low and raise the output over a couple of days — a level that feels right when you walk in is usually too strong for staff sitting in it all day.
Roughly twenty drops make a millilitre, which puts a 500ml bottle at around ten thousand drops. How long that lasts depends entirely on output setting and daily run time, so treat it as a scale rather than a promise: a machine running low and intermittently will take months to work through it, one running hard in an open space considerably less.
See the full Diffuser Essential Oil collection for smaller sizes and other profiles, or the humidifier and diffuser range for the machines it runs in.