I treat my seasonal allergies very simply and very effective. I use lemon, lavender, and peppermint. I rub this blend on my sinus passages every night before sleeping. I blend these oils, 5-8 drops each, in a 10ml roller bottle and fill with fractionated coconut oil.
I also use the doTERRA TriEase softgels, which is a blend of these essential oils.
I no longer use prescription allergy medicine or need antibiotics for my chronic sinusitis. I was on antibiotics every month from February to April, EVERY year. These three essential oils have changed my life!