Essential oils which contain a lot of monoterpenes or oxides have the shortest shelf life, of approximately 1-2 years. Essential oils which contain a lot of phenols may last up to 3 years. Essential oils which contain ketones, monoterpenols, and/or esters have a shelf life of 4-5 years.
You may have been told that pure essential oils do not expire because they are natural or what have you. However, this is far from being true! Essential oils do .
Do essential oils expire? I thought they would last forever, but I was so wrong. In fact, some popular essential oils lose their effectiveness after just 1-3 years!
Pure essential oils do not go rancid. Over time, however, essential oils can oxidize, deteriorate and gradually lose their therapeutic value and aromatic quality.