Is it OK to use iodized salt for saline solution? - The Environmental Literacy Council (2025)

The short answer is a resounding no, it’s generally not recommended to use iodized salt for making your own saline solution, especially for nasal rinses, wound cleaning, or piercing care. While iodized salt is a common household item, the added iodine can cause irritation to sensitive tissues like the nasal passages, open wounds, and fresh piercings. Let’s delve into why this is the case and explore the better alternatives.

Why Avoid Iodized Salt for Saline Solution?

The primary reason for steering clear of iodized salt lies in the potential for irritation and adverse reactions caused by the added iodine. Iodine, while an essential nutrient for thyroid function, is not needed and may be problematic when directly applied to certain bodily tissues. Here’s a closer look:

Irritation of Nasal Passages

When used for nasal irrigation, iodized salt can irritate the delicate nasal mucosa, potentially leading to a burning sensation, increased discomfort, and even exacerbation of existing nasal congestion or inflammation. Many individuals find non-iodized salt rinses soothing, while those using iodized salt may experience the opposite effect. The nasal passages are delicate, and the less irritation they endure, the better the experience of rinsing will be.

Potential Problems with Wound Care

For wound care, using iodized salt is also highly discouraged. The additives present in iodized salt, including iodine, can interfere with the healing process and can cause discomfort around the open wound. The goal of cleaning a wound with saline is to promote healing, and using iodized salt could hinder this. Similarly, cleaning a new piercing with a solution of iodized salt could also delay healing and lead to complications.

Piercing Complications

Using iodized salt for cleaning a new piercing is a common mistake that could cause a variety of problems, including irritation, prolonged healing times, and an increased risk of infection. The additives in iodized salt can be harsh on the sensitive tissue of a fresh piercing, and using a pure solution with no other additives is critical for healing a piercing properly.

The Importance of Purity

When making a saline solution, the objective is to create a gentle, isotonic solution that mimics the natural fluids of the body. This requires using pure sodium chloride without any additives. Iodized salt, by definition, includes added iodine, which introduces an unnecessary and potentially irritating element.

What is the Best Alternative to Iodized Salt?

The best and safest alternative to iodized salt is to use non-iodized salt, specifically pure sodium chloride. Here are the options that are generally recommended:

Non-iodized Sea Salt

Non-iodized sea salt is often preferred for its natural qualities and lack of added chemicals. Ensure that the sea salt is finely ground, making it dissolve easily. This reduces the risk of undissolved particles irritating the skin, or nasal passages.

Pickling or Canning Salt

Pickling or canning salt is a form of pure sodium chloride specifically designed for preserving foods. It’s an excellent choice for creating a saline solution since it’s free of any additives, including iodine. This type of salt is usually finely ground, making it easy to dissolve completely in water.

Neti Salt™

Neti Salt™ is a commercially produced product designed for nasal irrigation. It is a pure, finely ground sodium chloride, specifically formulated for use in a nasal rinse. It guarantees purity and optimal solubility, often making it a convenient option.

How to Make a Safe Saline Solution

Making a safe and effective saline solution is straightforward, but it’s essential to use the correct ingredients and measurements. Here’s a general guide:

Ingredients

• Non-iodized salt (sea salt or pickling/canning salt)
• Distilled, previously boiled, or otherwise sterilized water
• (Optional) Baking soda

Preparation

1. Sterilize Your Water: Always use distilled water or water that has been previously boiled and cooled. Tap water is not recommended due to the risk of introducing pathogens.
2. Measure the Salt: For nasal irrigation, a common ratio is 1-1.5 teaspoons of non-iodized salt per 4 cups (1000 ml) of water. For smaller volumes, you can use about ¼ teaspoon of finely ground non-iodized salt per cup of water. Adjust as needed for personal comfort.
3. Add Baking Soda (Optional): If desired, you can add a pinch or half teaspoon of baking soda to the mixture. This can help reduce the burning sensation that some experience and helps loosen mucus.
4. Mix Thoroughly: Stir the solution until all the salt and baking soda are completely dissolved.
5. Use Immediately: Use the solution shortly after making it, as the solution does not have preservatives.

Frequently Asked Questions (FAQs)

1. Can I use regular table salt if it’s not iodized?

While non-iodized table salt is better than iodized salt, it’s often not the best option due to the other potential additives that are included to make it free flowing. Non-iodized sea salt or canning salt is generally preferred.

2. What happens if I accidentally use iodized salt for a nasal rinse?

You might experience a burning sensation, nasal irritation, or discomfort. While not typically dangerous, it’s best to discontinue use immediately and rinse with a solution made from non-iodized salt.

3. Why is baking soda sometimes added to nasal rinse solutions?

Baking soda (sodium bicarbonate) helps to create a more balanced pH and can make the saline solution less irritating to the nasal passages. It can also help with decongestion and mucus removal.

4. Can I use a saline solution for cleaning my ears?

It is generally acceptable to use a saline solution to cleanse the outer ear but avoid irrigating or forcing liquid into the ear canal. If there is suspected ear infection or significant pain, consult a doctor rather than trying home care.

5. Is it possible for the saline solution to get stuck in my sinuses?

Yes, it is possible, particularly if your sinuses are swollen. Tilting your head properly can help prevent this. In most cases, any liquid will drain out eventually.

6. Can I reuse a saline solution after a nasal rinse?

No, it is not recommended to reuse the saline solution because the sterility of the solution cannot be guaranteed. It is best to make a fresh batch each time.

7. How often should I do a nasal rinse?

The frequency depends on your specific needs. Daily rinsing is fine for mild symptoms. Those with chronic issues may find that rinsing twice a day (morning and evening) is beneficial.

8. Is distilled water essential for a nasal rinse?

Using distilled or previously boiled water is essential to avoid introducing harmful pathogens into your nasal passages. Never use tap water.

9. Can I use saline solution for cleaning a wound?

Yes, saline solution made with non-iodized salt is good for cleaning wounds. It’s gentle and helps remove debris, promoting healing.

10. How do I make a saline solution for piercings?

Follow the same guidelines as for wound care: Mix non-iodized salt with distilled or previously boiled water. Always use clean equipment and ensure that you prepare the solution in a clean environment.

11. Why is iodized salt not good for piercings?

Iodized salt contains additives that can irritate new piercings, leading to prolonged healing and increased risk of infection. Pure, non-iodized sea salt or saline wound wash is better.

12. Can I use Epsom salt for a saline solution?

No. Epsom salts, made of magnesium sulfate, are not meant for nasal irrigation. They do not contain the properties necessary to clean nasal passages or open wounds.

13. How much salt should I use for making saline solution?

The ratio should be about 1-1.5 teaspoons of non-iodized salt per 4 cups (1000 ml) of water, or about ¼ teaspoon of finely ground non-iodized salt per cup of water. Adjust based on comfort.

14. Can I buy a premade saline solution?

Yes, commercially produced sterile saline solutions are available at pharmacies, and are ideal for convenience, especially when cleaning wounds or piercings.

15. Can I make a saline solution without sea salt?

Absolutely. As long as the salt is non-iodized and pure sodium chloride, you can use pickling or canning salt, which are equally effective.