There's no question that there are certain seasons of the year that you dread the most if you're one of the 50 million Americans who suffer from allergies. Keep reading to know about the most effective essential oils for allergies and how they work. A runny nose, clogged sinuses, watery eyes, sneezing, a scratchy throat, coughing fits, inflamed itchy skin, and even asthma attacks are just a few of the symptoms of allergies, whether they are seasonal or skin-related.