Why does my salt have an expiration date on it?

How Long is Epsom Salt Good For?

Epsom salt is a simple chemical known as magnesium sulfate and isn’t likely to break down or lose its effectiveness when it’s stored in a dry place.

Epsom salt will keep for many years after its marked expiration date. Even if it clumps or gets hard, you can just break it up or dissolve it to use it.

You can keep it from getting hard by keeping it sealed in its original packaging or inside of a waterproof container. This isn’t required though.

Epsom salts do come in different grades. Some are intended for human use while other grades are meant more for agricultural applications. If the package has a drug facts area or has a USP label then it’s meant for human use and meets the FDA requirements.

Why Does Epsom Salt Have an Expiration Date?

Why Does Epsom Salt Have an Expiration Date?

The expiration date on things like Epsom salt is required by law and only indicates the date that it should still resemble the original product. This means that before the expiration date it shouldn’t clump or get hard. After the expiration date then it’s possible for those things to happen.

Overall, the expiration date on Epsom salt doesn’t mean much of anything.


Related Questions

Now that we’ve gone over how to tell when Epsom salt has gone bad and how to properly store it, let’s take a look at a few related questions on the subject!

What are the uses of Epsom salts? 

Apart from being used as a laxative and food product, Epsom salt has other healthcare and beauty-related uses. 

We list here some of the most common uses of Epsom salt:

Epsom Salt In Beer

Epsom Salt is used to add sulfate and magnesium ions to the brewing water. This leads to an increase in the bitterness level of hops of the beer.

Epsom Salt As A Magnesium Supplement 

Magnesium is considered the fourth most abundant mineral in our body. Despite that, people do not consume magnesium in the required amounts. So, it is believed that intake of Epsom Salt increases the body’s magnesium levels

Epsom Salt As A Stress Reliever

Adequate magnesium level in the body is essential to produce neurotransmitters that cause stress reduction and improved sleep.

Because of this, some people claim that bathing in Epsom saltwater has improved their sleep as they feel more relaxed now.

Epsom salt also plays a prominent role in the formulation of energy in body cells. This helps in rejuvenating you after a long tiring day!

Epsom Salt As A Pain Reliever

Another claim regarding Epsom salt is that it reduces pain and swelling. Inflammation is the natural response of the body to any injury.

Magnesium present in the Epsom Salt treats the inflammation and promotes speedy recovery.

Moreover, it can increase serotonin in the brain. Thus, the usage of Epsom Salt stabilizes mood and reduces anxiety and depression!

Epsom Salt As A Beauty Product

Epsom Salt is believed to have numerous beauty effects like:

  1. It exfoliates dead skin cells
  2. It cleanses pores
  3. It fights blackheads
  4. It repairs skin patches 
  5. It repairs cracked heels
  6. It provides voluminous and frizz-free hair
  7. It helps to get rid of body odor and fungal infections.

Epsom Salt For Gardening

Epsom salt is used for gardening purposes as well. Interesting isn’t it? Well, there are claims that Epsom salt can be used as insecticides and fertilizers to keep your garden green and away from pests.

Moreover, Epsom salt promotes the growth of fruits and flowers. With continuous and proper use, you will surely see the difference in your plant growth.

Is Epsom salt dangerous? 

Although Epsom Salt is generally safe for external use, there are a few concerns if you take it orally.  First of all, it has a laxative effect.

Other uncommon side effects include:

  1. Headache
  2. Nausea
  3. Extreme Fatigue
  4. Dizziness
  5. Fainting
  6. Blurry Vision

Which is better for cooking: Epsom salt or table salt?

Though you see the word salt attached to both Epsom Salt and Table Salt and they look similar in appearance, they are different. 

While Table salt is Sodium Chloride made up of elements Sodium and Chlorine, Epsom Salt is magnesium sulfate containing magnesium, oxygen, and sulfur. Hence, the two have distinct chemical properties.

Therefore, Epsom Salt is bitter and acidic that makes it inedible. For this reason, it is highly unsuited for use in cooking. Table Salt is more suitable when it comes to cooking due to its taste.

What should I consider when buying Epsom salt?

Keep in mind the below-mentioned points before you buy Epsom salts: 

  • Make sure to buy the Epsom Salt from reputable and trustworthy brands. Do not go after exceptional deals and compromise on the salt you’re buying. 
  • Make sure that you get 100% Magnesium Sulfate as this is a major requirement
  • Keep in mind what you’re using the salt for. If you’re taking Epsom salt for bathing, go for scented options. For oral intake, avoid such Epsom salts.

Are all Epsom salts the same?

Epsom Salts contain naturally occurring minerals, therefore all Epsom salts are chemically the same. However, there are different grades of the Epsom salt depending upon the application.

Broadly, there are two grades of Epsom salt:

USP Grade

The word USP here stands for United States Pharmaceutical Grade, also called the Food Grade. It is the most quality-controlled salt used in food. Thus, the quality of this salt is guaranteed. 

When you are buying the Epsom salt, make sure to check the label for the USP designation. Such Epsom salt is manufactured under stringent guidelines by the FDA and is deemed suitable for human use.

Technical Grade

Also called the Industrial Grade or Agricultural Grade, this grade of Epsom salt is used for industrial purposes. Thus, it is not as pure as the Food Grade and might contain some impurities.

So you can say that it is unsuitable for human use.


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