Unveiling the Hidden Danger: Sulfites Named Allergen of the Year 2024

Sometimes, things that can make us sick are hard to spot. They hide in plain sight, evading detection, until they unleash their unexpected consequences. Among these stealthy allergens lies sodium disulfite, an inorganic compound that masquerades under various aliases such as sodium metabisulfite or sodium pyrosulfite.

While sulfites might not have garnered the same level of attention as other infamous allergens, their newfound status demands a closer look at their prevalence and potential dangers. Sulfites, a group of sulfur-based compounds commonly used as preservatives in various everyday items such as food, medicine, and personal care products, have quietly crept into our diets, lurking in everything from dried fruits to wines. 

Despite appearing harmless, this compound has the potential to cause allergic skin reactions, ranging from mild discomfort to severe anaphylaxis. Their ubiquitous presence poses a formidable challenge for individuals sensitive to or allergic to these compounds, thrusting them into the forefront of allergy awareness and advocacy efforts.

However, because they are hard to detect, they often go unnoticed during standard allergy tests. In an effort to shed light on this overlooked danger, the American Contact Dermatitis Society has named sulfites the Allergen of the Year for 2024. This decision aims to raise awareness and help people protect themselves from the hidden risks posed by sulfites.


Sulfites are a group of sulfur-based compounds that occur naturally in some foods and are also added to others as preservatives. They serve various purposes, including preventing bacterial growth, maintaining freshness, and enhancing the appearance of certain foods. Common sulfites include sulfur dioxide, sodium sulfite, sodium bisulfite, and potassium bisulfite.

They are prevalent in a wide array of foods and beverages, making them challenging to avoid for individuals sensitive to or allergic to these compounds. Some common sources of sulfites include:

  • Processed Foods:
    Sulfites are commonly used in processed foods such as dried fruits, canned vegetables, potato chips, and snack bars to prolong shelf life.
  • Wine and Beer:
    Sulfites occur naturally during the fermentation process of alcoholic beverages like wine and beer. Additionally, sulfites are often added as preservatives to maintain their quality.
  • Condiments and Sauces:
    Many condiments and sauces, including vinegar, mustard, soy sauce, and salad dressings, contain sulfites to enhance flavor and preserve freshness.
  • Dried Fruits and Vegetables:
    Sulfites are frequently added to dried fruits like raisins, apricots, and cranberries to prevent discoloration and maintain texture.
  • Shrimp and Shellfish:
    Sulfites may be used in seafood processing to prevent discoloration and maintain freshness, particularly in shrimp and shellfish.


For individuals allergic or sensitive to sulfites, avoiding these compounds requires careful attention to food labels and ingredient lists. Here are some strategies to minimize sulfite exposure:

  • Read Labels: Check food labels for sulfite-containing ingredients such as sulfur dioxide, sodium sulfite, sodium bisulfite, potassium metabisulfite, and others.
  • Choose Fresh Foods: Opt for fresh, unprocessed foods whenever possible, as they are less likely to contain added sulfites.
  • Cook from Scratch: Cooking meals from scratch allows you to control the ingredients and avoid sulfite-containing additives commonly found in processed foods.
  • Seek Sulfite-Free Alternatives: Look for sulfite-free alternatives or products labeled "sulfite-free" when shopping for groceries.
  • Communication: When dining out, communicate your sulfite allergy or sensitivity to restaurant staff to ensure your meal is prepared without sulfite-containing ingredients.


To mitigate sulfite exposure and minimize the risk of allergic reactions, individuals can take proactive steps such as:

  • Maintaining Awareness: Stay informed about sulfite-containing foods and beverages to make informed dietary choices.
  • Building Allergy Action Plans: Work with healthcare professionals to develop personalized allergy action plans outlining strategies for managing sulfite allergies or sensitivities.
  • Seeking Medical Advice: Consult allergists or immunologists for comprehensive evaluation and management of sulfite-related allergies or sensitivities.
  • Advocating for Labeling: Advocate for improved labeling regulations to enhance transparency regarding sulfite content in food and beverage products.
  • Educating Others: Raise awareness about sulfite allergies and sensitivities within your community to promote understanding and support for affected individuals.


Sulfite allergies can affect anyone, but certain groups are more susceptible than others. Individuals with asthma are particularly at risk, as sulfites can trigger asthma attacks in some cases. Additionally, those with a history of allergies or sensitivities to other substances may be more susceptible to developing a sulfite allergy. 

However, it's important to note that sulfite allergies can develop at any age and in people with no previous history of allergic reactions. Therefore, it's crucial for everyone to be aware of the potential dangers associated with sulfites and to take the necessary precautions to avoid exposure.


Certain occupations entail a higher risk of exposure to sulfites, thereby increasing the likelihood of developing an allergy to these compounds. Individuals working in industries where sulfites are commonly used as preservatives or additives face heightened occupational risk. Here are some occupations where employees may be at increased risk of sulfite allergies:

  • Food Industry Workers: Employees involved in food processing, packaging, and preparation are frequently exposed to sulfites present in various food products. This includes workers in bakeries, wineries, breweries, and food manufacturing plants.

  • Restaurant Staff: Cooks, chefs, and food service workers who handle ingredients containing sulfites, such as condiments, sauces, and processed foods, are at risk of exposure to these allergens.

  • Pharmaceutical Workers: Individuals working in pharmaceutical manufacturing, particularly in the production of medications, may encounter sulfites as preservatives in liquid formulations, injectable drugs, and other pharmaceutical products.

  • Cosmetic and Personal Care Industry Workers: Employees in cosmetics and personal care product manufacturing, including skincare, haircare, and hygiene product production, may come into contact with sulfites present in certain formulations.

  • Wine and Beverage Industry Personnel: Workers involved in wine production, including winemakers, cellar workers, and bottlers, are exposed to sulfites used as preservatives in wine and other alcoholic beverages.

  • Chemical Industry Workers: Employees working with sulfite-containing chemicals in industrial settings, such as water treatment plants or paper manufacturing facilities, may face occupational exposure to sulfites.

  • Healthcare Professionals: Medical personnel administering medications, particularly intravenous drugs and solutions containing sulfite preservatives, may encounter sulfites in clinical settings.

It's essential for individuals in these occupations to be aware of the potential risks associated with sulfite exposure and to take appropriate precautions, such as using protective equipment and following safety protocols, to minimize the likelihood of developing sulfite allergies. 


While sulfites are primarily associated with food and beverages, they are not typically found in clothing. However, some individuals may experience skin reactions or irritation from certain textiles or dyes used in clothing manufacturing. If you suspect a clothing-related allergy, consult a dermatologist for proper diagnosis and management.

For optimal prevention of allergic reactions, Cottonique strongly advises the following:

  1. Opt for loose-fitting attire.
  2. Steer clear of nylon stockings, especially those in darker hues.
  3. Double wash newly purchased clothing or bed linens before use.
  4. Invest in garments made from natural materials such as silk, cotton, and wool.

At Cottonique, we advocate for the use of 100% organic cotton undergarments and clothing as the most effective defense against skin allergies such as eczema, allergic contact dermatitis, urticaria, angioedema, and others.

Through our experience, we've learned to avoid specific substances post-flare-up. This underscores the importance of remaining vigilant for potential triggers that could provoke irritation.

If you're committed to minimizing triggers and eliminating allergens from your daily life, begin by stocking your wardrobe with our allergy-free organic cotton clothing. Avoiding all potential irritants and allergens continues to be the optimal approach to preventing itchy and irritated skin.

DISCLAIMER: The information presented on Cottonique is not, and will never be, intended to be a substitute for professional medical advice, diagnosis, or treatment. All content materials found on this site, including text, treatments, outcomes, charts, graphics, photographs, and study findings, are created and published for general informational purposes only. It should not, in any way, be construed as a standard of care to be followed by a user of the website. 

Thus, readers are encouraged to verify any information obtained from this website with other accurate references and review all information regarding any medical condition or treatment with their physician. As Cottonique strives to help those with allergies live better days, the hypoallergenic apparel brand encourages everyone to always seek the advice of their physician or other qualified health providers with any questions they may have regarding a medical condition.