Do Smarties Expire? Smarties are a popular type of sugar-coated candy enjoyed by both children and adults. Over the years, this colorful treat has remained a favorite snack across generations. Like all food products, Smarties have a shelf life. Understanding candy expiration is important to ensure you’re enjoying them while they’re still fresh and safe.
In this article, we’ll cover everything you need to know about Smarties: their shelf life, how to store them properly, how to tell if they’ve gone bad, and whether it’s safe to eat them after the expiration date.
Do Smarties Expire?
Yes, Smarties do expire, although they have a relatively long shelf life. The shelf life of Smarties candy can extend up to one year when stored in a cool, dry place. According to the official Smarties FAQ, the candy has a shelf life of up to 24 months when stored properly, although they recommend consuming it within a year for best flavor and texture. For the best taste and quality, it’s recommended to consume them before the expiration date printed on the packaging. However, that date is often more about quality than safety.
Is It Safe to Eat Expired Smarties?
Eating Smarties that are slightly past their expiration date is generally considered safe. The primary ingredient in Smarties is sugar, which acts as a natural preservative by preventing the growth of harmful bacteria.
However, if the candy has been exposed to moisture or improper storage conditions, it may develop an off taste, become sticky, or even grow mold. In such cases, it’s best to discard them.
The U.S. Food and Drug Administration (FDA) states that many packaged candies, especially those high in sugar, do not pose serious health risks after their expiration date as long as they show no signs of spoilage. However, they recommend checking for texture or taste changes before consuming expired candy. Source: FDA Food Safety Guidance.
How Long Do Smarties Last After Opening?

Storing Smarties in a cool, dry place helps maintain freshness.
Once opened, Smarties can still last up to a year if stored properly. Make sure to keep them in an airtight container, away from heat and direct sunlight. Improper storage can lead to changes in texture and flavor, or cause the candies to clump together and go stale more quickly.
Ingredients That Affect Shelf Life
Several ingredients in Smarties contribute to their long shelf life:
- Sugar: Acts as a preservative by absorbing moisture and preventing bacterial growth.
- Corn Syrup: Helps retain moisture and prevents the candy from becoming brittle.
- Artificial Colors and Flavors: While they don’t spoil easily, they can lose potency over time, affecting taste and appearance.
- Anti-Caking Agents: Ingredients like calcium stearate help prevent clumping in humid conditions.
These components work together to extend the freshness and stability of the candy.
Sugar, being hygroscopic, inhibits microbial growth by reducing available water content, which extends shelf life in dry candies. (Source: National Library of Medicine)
Signs That Smarties Have Gone Bad

Discoloration or texture change may be signs that Smarties have gone bad
Many people wonder, do Smarties go bad? While Smarties are durable, they can still spoil under poor storage conditions. Here are signs to watch for:
- Texture Changes: Too sticky, too soft, or rock hard.
- Color Changes: Faded or discolored spots, especially browning.
- Unpleasant Odor or Taste: Rancid, sour, or bitter flavors indicate spoilage.
- Mold or Insects: Obvious contamination is a clear sign to throw them away.
If you notice any of these signs, it’s best not to consume the candy.
Should Smarties Be Refrigerated?
No, Smarties should not be refrigerated. The moisture inside a fridge can cause the candies to become sticky or lose their texture. Instead, store them at room temperature in a cool, dry place using an airtight container.
Tips to Keep Smarties Fresh
To keep your Smarties tasting great for as long as possible:
- Store them in an airtight container.
- Keep them in a cool, dry area away from heat sources and sunlight.
- Avoid storing them with strong-smelling foods like onions or garlic.
- Do not refrigerate.
By following these tips, you can preserve the flavor and texture of your Smarties for months.
What Happens If You Eat Spoiled Smarties?
Consuming spoiled Smarties may lead to symptoms similar to mild food poisoning, such as:
- Nausea or vomiting
- Abdominal pain or cramps
- Diarrhea
- Headache
- Fever (in rare cases)
If you experience severe symptoms after eating old candy, seek medical attention.
According to the Cleveland Clinic, consuming expired candy rarely leads to serious illness, but poor storage can introduce risks like mold or bacteria. (Source).
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FAQs about “Do SMARTIES Expire”
1. Can Smarties go bad even if they’re not expired?
Yes, Smarties can still go bad if they’re stored improperly—like in a humid or hot environment. Always check for changes in texture, color, or smell before eating.
2. What happens if you eat old Smarties?
If the candy is just past its expiration date and looks fine, it’s usually safe. But if it tastes off or has visible mold or stickiness, it’s best to throw it away to avoid stomach issues.
3. How should I store Smarties to make them last longer?
Keep them in an airtight container at room temperature, away from heat and moisture. Avoid the fridge, as it can cause stickiness or texture changes.
4. Do Smarties have dairy or allergens that affect shelf life?
Original Smarties are free from common allergens like dairy, nuts, and gluten, which helps them last longer. Always check the label for any variations or special editions.
5. Is there a difference between expiration date and best-before date?
Yes—expiration dates are about safety, while best-before dates focus on quality. For Smarties, the printed date is usually a best-before date, meaning the candy is still safe shortly after but may not taste as good.
Conclusion
Smarties can last a long time if stored correctly, but like all candy, they will eventually expire. Be sure to check for signs of spoilage before eating, especially if the packaging has been opened or the candy is past its expiration date.
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