An isotonic mist contains a concentration of salt similar to your body’s natural fluids. Isotonic mists, like Ayr Saline Nasal Mist, are most commonly used for regular maintenance of clean, healthy sinuses.

A hypertonic mist contains a higher concentration of salt than your body’s fluids. Hypertonic mists, like Ayr Allergy & Sinus Hypertonic Saline Nasal Mist, are used post-surgery to help reduce swelling or to draw out moisture from severe allergies.

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