Yes, essential oils can help with seasonal allergies. One of the common reasons for causing seasonal allergies is a weak immune system, because of which coughing, sneezing, and nasal congestion become common during seasonal change. Essential oils for allergies such as lavender oil, peppermint oil, and eucalyptus oil have antihistamine, antiviral, and antibacterial properties that target stuffiness and chest congestion, providing you with relief from allergies caused by pollen or other airborne allergens. These oils also contain antioxidants, which strengthen our immune system.