It's sunny outside, you've got that summer feeling, when all of a sudden: your eyes are streaming, you can't stop sneezing and the back of your throat is itching in places you didn't know you had. Yep, hay fever is back with a vengeance this year.

While over-the-counter medicines can provide relief, it could also be possible to cure the pesky seasonal allergy with an all-natural saltwater spray. And the great thing is that you aren't pumping steroids or preservatives into your body.

"It means they can be used by anyone that starts to feel the effects of hay fever," Dr Michael Rudenko, allergy and immunology consultant and medical director at the London Allergy and Immunology Centre, told MailOnline. "This includes pregnant women, breastfeeding mums and children under the age of three.

"This spray has no known side effects, and the routine with sea water can potentially reduce the amount of medication a sufferer needs to control their symptoms."

Most sprays work by protecting the inside of the nose with an invisible film. This then prevents allergens from getting into the nasal cavity and clears mucus. This unblocks the nose quickly, helping you to breathe more easily again.

Hay fever occurs when pollen makes its way into your nose, acting as an irritant. Your nose is the first line of defence, protecting with its tiny hairs and moist lining. It's when these defence mechanisms aren't working properly (the lining dries up or the hairs are blocked and can't move), hay fever strikes.

That's why it's so important to keep your nose clean and unblocked all year round, not just during the summer.

"The natural protective film of special moisture and tiny moving cilia along the nasal lining provide clearance of the air we breathe, trap dust, nasty bugs and allergens carry them away before they can cause harm to the organism," Dr Rudenko added.

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