Laundry Detergent Allergies (2024)

An allergic reaction to laundry detergent can cause an itchy, red rash to appear after wearing newly cleaned clothes. An allergic reaction to ingredients in your laundry detergent may develop suddenly, even if it's a brand you've used for years. Symptoms can affect specific parts of your body, like the armpits, or spread over all areas that come into contact with your clothes.

Read more about laundry detergent allergies, their causes and symptoms, and how to prevent or treat this condition.

What Are Laundry Detergent Allergies?

Having a laundry detergent allergy doesn't necessarily mean you are allergic to a certain brand. Laundry detergent can cause an allergic reaction when it contains one or more ingredients that you are allergic to. When you wear clothes that have been washed in it, your body has a negative reaction called contact dermatitis.

In addition to skin issues, research has shown that laundry detergent can also irritate the cells in the lungs, possibly leading to asthma or other types of allergic reactions.

What Causes Laundry Detergent Allergies?

You can have an allergic reaction to laundry detergent containing certain ingredients. The biggest culprits are fragrances, preservatives, and surfactants. Some people might also be allergic to dyes used to color the detergent.

Fragrances

Fragrance chemicals are added to laundry detergent to make it smell good. However, these chemicals can cause allergic reactions. Two ingredients (called hydroperoxides) that are often added to make detergents smell better include limonene, which is citrus-based, and linalool, which produces a range of floral scents. These substances release their scent when they mix with oxygen in the air.

Preservatives

Preservatives are added to laundry detergent to help protect against contamination. They are used to prolong shelf life and kill bacteria or fungi that can cause the detergent to break down and be less effective for cleaning.

One group of preservatives, called parabens, has received a lot of negative attention in the media. These chemicals are thought to be endocrine disruptors, meaning they might mimic or interfere with hormones in the body. In reality, allergic reactions to parabens are rare.

However, this fear has led to the development of many paraben-free products, including some types of laundry detergents.

Surfactants

Surfactants are another ingredient in laundry detergent that could cause an allergic reaction. These substances help break up stains and keep dirt that's released from laundry into the water from sticking back onto your clothes. Some types of surfactants are particularly helpful for removing oil-based stains, while others act as fabric softeners.

Surfactants boost the effectiveness of your laundry detergent, but coming into contact with these substances can cause skin irritation.

Common Signs and Symptoms of Laundry Detergent Allergies

An allergic reaction to laundry detergent looks a lot like an allergic reaction to other substances (such as poison ivy or poison oak) that cause contact dermatitis. Symptoms can include:

• Red skin
• Skin irritation
• Severe itching
• Swelling in the affected area
• Hot skin
• Skin that is painful to touch
• Bumps
• Blisters

These symptoms can be ongoing if you're consistently exposed to the allergen and can last for weeks after the exposure stops.

How is a Laundry Detergent Allergy Diagnosed?

Allergy symptoms from laundry detergent can occur within a few hours or as late as 10 days after you've been exposed to the allergen. This can make it particularly difficult to determine the cause of your symptoms. However, your healthcare provider can determine the culprit with a series of patch tests.

During patch testing, a series of "patches" containing different allergens (substances that can cause an allergic reaction) are taped to your back. These patches must stay in place and cannot get wet. You won't be able to shower, and you'll have to avoid excess sweating during the five days it takes to complete a patch test.

After 48 hours, the patches are removed. Your healthcare provider will then assess your skin to look for negative reactions. To assess for delayed reactions, you will return after another 48 hours has passed and be reassessed. If you have an allergy to one or more of the substances, your symptoms will still be present at your last visit to your healthcare provider.

Treating Rashes From Detergent

There are several ways you can help reduce your symptoms while you're waiting to see if you have a laundry detergent allergy or if you accidentally wear something washed with a detergent in which you're allergic. These include:

• Taking an oatmeal bath
• Washing the affected area in cool water, using fragrance-free soap
• Rinsing your skin thoroughly
• Patting your skin dry
• Applying over-the-counter creams or ointments
• Wearing loose-fitting clothing
  

Prevention

While you can't control how your immune system reacts to substances, you can reduce your risk of an allergic reaction by implementing these strategies:

• Use products free from the most common types of allergens: Look for products that are labeled "hypoallergenic" or types that are made specifically for sensitive skin. Use these products for washing both your clothing and your bedsheets.
• Reduce detergent build-up in your clothes: Choose liquid detergent over powder versions—liquid tends to leave less residue after washing.
• Don't use too much detergent: Use only the recommended amount of detergent for the size of your load and rinse thoroughly—especially if you're washing something by hand. Consider using the extra rinse option on your machine to further decrease your exposure.
• Pay attention to the product being used: Once your allergy has been diagnosed, the most important part of managing your condition is avoiding anything that contains the allergen. This might require you to change your laundry detergent and/or other cleaning and hygiene products, and to ask questions about the detergent when someone else is doing your laundry.

A Word From Verywell

Your healthcare provider will likely refer you to an allergist—a doctor who specializes in treating allergies—to determine whether you have an allergy to laundry detergent. Your healthcare provider can also prescribe skin creams or medications to help control your allergy symptoms if over-the-counter treatments are not working.