What affects the quality of your oil?
Always store your oil in a cool (recommended below 25 Celsius) and dark place when not in use to prevent them from going rancid. You will know an oil had gone off by comparing its smell to when you first opened it, as it will give off a different kind of aroma. You will definitely be able to tell the difference!
A dark amber glass bottle is the preferred storage method to prolong the lifespan of essential oils, which our products use. However, carrier oils or diluted essential oil blends can be stored in a PET bottle.