Sept 21, 2026
Medical organizations like the [American Academy of Allergy, Asthma & Immunology (AAAAI)](https://www.aaaai.org/tools-for-the-public/conditions-library/allergies/saline-sinus-rinse-recipe) recommend the following balanced formula for sinus rinses:
* 3 teaspoons of non-iodized salt (such as canning, pickling, or kosher salt)
* 1 teaspoon of baking soda (pure sodium bicarbonate) [2, 3, 4]
Instructions:
1. Thoroughly mix the dry salt and baking soda together and store the mixture in a small, clean, airtight container.
2. When ready to use, measure 1 teaspoon of this dry mixture and dissolve it completely into 8 ounces (1 cup) of lukewarm water.
3. Pour the liquid into a clean nasal spray bottle, bulb syringe, or neti pot for use.
Critical Safety Rules for Homemade Formulas
If you choose to make a nasal spray at home, you must adhere strictly to these safety protocols to prevent introducing dangerous pathogens directly into your sinuses:
* ⚠️ Never Use Plain Tap Water: Raw tap water contains low levels of amoebas and bacteria that are perfectly safe for your stomach to digest, but can cause fatal brain or sinus infections if introduced into the nasal passages. Only use distilled water, sterile water, or tap water that has been boiled vigorously for 3 to 5 minutes and cooled to lukewarm.
* Use Non-Iodized Salt Only: Iodized table salt contains chemical additives and anti-caking agents that can severely sting, burn, or inflame the delicate mucous membranes inside your nose.
* Do Not Skip the Baking Soda: Pure saltwater is acidic and will burn your nose. The baking soda acts as a buffering agent to balance the pH, matching your body’s natural chemistry and preventing irritation.
* Discard Regularly: Because homemade solutions lack chemical preservatives, any mixed liquid should be discarded and remade fresh after 24 to 48 hours to prevent bacterial growth.