Studies show that essential oils for memory and concentration may help lift brain fog and promote mental clarity by stimulating the olfactory nerve, which is connected to the limbic system in the brain that is responsible for mood, cognition, and more. If you’re looking for the best essential oils for brain fog, try the oils in our Aligning blend: Rosewood, Spruce, Frankincense Serrata, Roman Chamomile, and German Chamomile.