Does Spandex Shrink In The Dryer? A Detailed Look

Spandex, also known by brands like Lycra and Elastane, is a popular fabric known for its stretchiness and ability to cling to the body. But what happens when you toss your spandex leggings or swimwear in the dryer? Will they shrink down and become unwearably tight?

If you’re short on time, here’s a quick answer: Yes, spandex can shrink in the dryer due to the heat drying out the fibers. However, there are steps you can take to help prevent spandex items from shrinking.

In this comprehensive article, we’ll take an in-depth look at spandex and the dryer to help you understand what causes shrinkage and how to care for your stretchy clothes properly.

What is Spandex?

Spandex, also known as elastane or Lycra, is a synthetic fiber that is known for its exceptional elasticity. It is composed of a long-chain polymer called polyurethane, which is created through a chemical process known as polymerization.

Spandex fibers can be stretched up to 600% of their original length and still return to their original shape without losing their elasticity.

Chemical composition and properties

Spandex is made up of at least 85% polyurethane, which gives it its remarkable stretchiness. The remaining percentage consists of various additives that enhance its durability, stability, and resistance to degradation.

These additives also help to improve the fabric’s ability to withstand exposure to heat, light, and chemicals.

Spandex fibers have a smooth, shiny appearance and are incredibly lightweight. They are highly resistant to abrasion and have excellent stretch and recovery properties, making them ideal for use in garments that require a snug fit and maximum flexibility.

Spandex is also known for its ability to retain its shape, even after repeated stretching and washing.

Uses and popularity in clothing

Spandex is widely used in the textile industry, particularly in the production of stretchable fabrics. It is commonly blended with other fibers such as cotton, polyester, or nylon to create fabrics with enhanced stretch and recovery properties.

This blend allows for a comfortable fit and freedom of movement, making it popular in sportswear, activewear, and swimwear.

The use of spandex in clothing has revolutionized the fashion industry, as it allows designers to create form-fitting garments that accentuate the body’s curves and contours. Whether it’s a pair of leggings, a bodycon dress, or a compression shirt, spandex-based fabrics provide a sleek and flattering fit for both casual and athletic wear.

Moreover, spandex is also used in the production of undergarments, hosiery, and even medical compression garments. Its ability to provide support and compression makes it suitable for use in post-surgical garments or to alleviate certain medical conditions.

Does Spandex Shrink in the Dryer?

Many people have experienced the frustration of finding their favorite spandex clothing items have shrunk after being thrown in the dryer. But is this a common occurrence? Let’s take a closer look at whether spandex really does shrink in the dryer.

Heat causes spandex fibers to contract

Spandex, also known as elastane or Lycra, is a synthetic fiber that is known for its exceptional stretch and recovery properties. However, one drawback of spandex is that it is sensitive to heat. When exposed to high temperatures, such as those found in dryers, spandex fibers can contract, causing the fabric to shrink.

While the amount of shrinkage can vary depending on several factors, including the specific blend of fibers and the heat settings used, it is generally recommended to avoid subjecting spandex garments to high heat in order to preserve their original shape and size.

It’s important to note that spandex is often blended with other fibers, such as cotton or polyester, to enhance its durability and comfort. The presence of these other fibers can affect how the spandex reacts to heat.

For example, a spandex-cotton blend may be more prone to shrinking in the dryer compared to a spandex-polyester blend.

Spandex blended with other fibers

When spandex is blended with other fibers, such as cotton or polyester, the resulting fabric can offer the best of both worlds. The spandex provides stretch and flexibility, while the other fibers contribute to the fabric’s breathability, moisture-wicking properties, and overall comfort.

However, it’s important to note that different fabric blends may have different care instructions. For example, a spandex-cotton blend may require a gentler wash cycle and air-drying to prevent excessive shrinkage, while a spandex-polyester blend may be more resilient to heat and can withstand machine drying.

If you’re unsure about the care instructions for your spandex-blend garments, it’s always a good idea to check the manufacturer’s recommendations. They will provide specific instructions on how to care for the fabric to minimize shrinkage and maintain its original shape and size.

To summarize, spandex can shrink in the dryer due to the heat causing the fibers to contract. The amount of shrinkage can vary depending on the specific blend of fibers and heat settings used. It’s important to follow the care instructions provided by the manufacturer to preserve the integrity of your spandex garments and avoid unnecessary shrinkage.

Factors That Contribute to Spandex Shrinkage

Spandex is a synthetic fiber known for its stretchiness and ability to retain its shape. However, like many fabrics, spandex can shrink under certain conditions. Here are some key factors that contribute to spandex shrinkage:

High heat setting

One of the main culprits of spandex shrinkage is exposing it to high heat settings in the dryer. When spandex is subjected to temperatures above its melting point, it can shrink and lose its elasticity.

Therefore, it is important to always check the care label of your spandex garments and avoid drying them on high heat.


Another factor that can contribute to spandex shrinkage is over drying. Leaving your spandex garments in the dryer for too long can cause them to lose moisture and become more prone to shrinkage. It is recommended to remove spandex garments from the dryer while they are still slightly damp to prevent excessive shrinkage.

Spandex percentage in the fabric

The percentage of spandex in the fabric composition can also affect its susceptibility to shrinkage. Fabrics with a higher spandex content are generally more prone to shrinking than those with a lower percentage.

If you have a garment with a high spandex content, it is important to take extra care when laundering and drying it to minimize shrinkage.

Garment construction

The construction of the garment can also play a role in spandex shrinkage. Garments with poor construction, such as those with loose seams or inadequate stitching, may be more likely to shrink in the dryer.

It is important to choose well-constructed spandex garments and handle them with care to minimize shrinkage.

Tips to Prevent Shrinking Spandex

Spandex is a popular fabric known for its stretchiness and ability to conform to the body. However, it is also prone to shrinking if not properly cared for. Here are some tips to prevent your spandex garments from shrinking:

1. Wash in cold water

When it comes to washing spandex, cold water is your best friend. Hot water can cause the fabric to shrink, so it’s important to always use cold water when laundering your spandex items. This will help to preserve their shape and elasticity.

2. Avoid high heat drying

One of the biggest culprits of spandex shrinkage is high heat drying. The heat can cause the fibers to contract, leading to a smaller and tighter fit. To prevent this, it’s best to air dry your spandex garments or use a low heat setting on your dryer.

3. Lay flat to dry

Another effective way to prevent spandex from shrinking is to lay your garments flat to dry. This allows them to retain their shape and stretchiness. Hanging spandex items can cause them to stretch out, lose their shape, or even develop unwanted wrinkles.

4. Use a delicates wash bag

Using a delicates wash bag can provide an extra layer of protection for your spandex items during the washing process. This will help to prevent them from getting tangled or stretched out. It’s especially useful when washing spandex items with other fabrics that may have zippers or hooks that could potentially snag the spandex.

By following these tips, you can help prolong the life of your spandex garments and prevent them from shrinking. Remember, proper care and maintenance are essential to maintaining the quality and fit of your spandex clothing.

What to Do If Your Spandex Has Shrunk

If you find that your spandex garment has shrunk after being dried in the dryer, don’t worry! There are several steps you can take to try and restore its original size and shape. Here are some suggestions:

Try reshaping while wet

One method you can try is to reshape the spandex while it is still wet. Gently stretch and pull the fabric back to its original size, being careful not to overstretch it. This can help to relax the fibers and bring back some of the lost elasticity.

Once you have reshaped it, lay it flat to dry or hang it up to air dry.

Stretch it back out

If reshaping while wet doesn’t fully restore the spandex, you can try stretching it back out. Put on the garment and gently stretch it in different directions, focusing on the areas that have shrunk. This can help to loosen the fibers and make the fabric more flexible.

Be careful not to stretch it too forcefully, as this can cause damage to the fabric.

Wash with hair conditioner

Another method you can try is washing the spandex garment with hair conditioner. Fill a sink or basin with lukewarm water and add a small amount of hair conditioner. Let the garment soak in the mixture for about 15 minutes, then rinse it thoroughly with clean water.

The conditioner can help to soften the fibers and make them more pliable, allowing the fabric to regain some of its original stretch.

When all else fails

If none of the above methods work, it may be time to accept that your spandex garment is permanently shrunk. However, don’t despair! There are still ways you can repurpose the item or use it in a different way.

For example, you could turn a shrunken spandex top into a cropped workout tank or use shrunken leggings as comfortable loungewear around the house. Get creative and find new ways to make use of your shrunken spandex!

Remember, prevention is always better than cure when it comes to keeping your spandex garments in good condition. Whenever possible, it’s best to follow the care instructions on the label and avoid drying spandex in the dryer.

Instead, hang the garment up to air dry or lay it flat to maintain its shape and elasticity for longer.

For more information on caring for spandex garments, you can visit the website, which provides helpful tips and advice.


To summarize, spandex is prone to shrinking when exposed to high heat like that inside a clothes dryer. However, you can take proactive steps when laundering spandex garments to prevent excessive shrinkage. Handle spandex delicately, wash in cold water, lay flat to dry, and avoid high heat settings.

If shrinkage does occur, there are a few tricks to try restoring the garment’s original size and shape. With proper care, your spandex workout gear and swimsuits can maintain their stretchiness and keep their flattering fit for many wears.

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