With a Maison Berger lamp you can purify the air to 68% and it takes about 1 minute per m2. If you just want to spread the scent, about 15-30 minutes of burning time is usually enough for a normal-sized living room. The scent remains for about 4 hours after you turn off the lamp.
The scents are available in two sizes, 500 ml: burn time 20 hours / scent 80 hours and 1L: burn time 40 hours / 160 hours scent.
Top note: Tangerine, orange and cardamom.
Middle note: Bergamot, black pepper and coriander.
Bottom note: Orange blossom and jasmine.