These wholesale aromatherapy diffuser necklaces will allow your customers to wear your favourite essential oil or one of our special blends wherever they go while also experiencing the positive health benefits they provide. Each locket contains a tiny piece of pad which holds a few drops of oil that slowly diffuses through the ventilation holes on the front. The scent of your oil can last for several days, but you can always top up more oil to the pad after the oil has completely diffused.