Does Polyester And Spandex Shrink?

When buying clothes made of polyester, spandex, or a blend of the two fabrics, it’s common to wonder if they will shrink when washed. Spandex leggings and polyester dresses are staples in many closets, so understanding how these fabrics react in the wash can help you care for your clothes properly.

If you’re short on time, here’s a quick answer to your question: Polyester and spandex fabrics are designed not to shrink when washed properly, although excessive heat when drying can cause minor shrinking in some garments. Read on for more details.

The Properties of Polyester that Prevent Shrinking

Polyester is Heat Resistant

One of the key properties of polyester that prevents shrinking is its heat resistance. Polyester is made from synthetic fibers that have a high melting point, which means it can withstand higher temperatures without deforming or shrinking.

Unlike natural fibers like cotton or wool, polyester can handle being exposed to hot water or high heat during the washing and drying process without any significant changes in its size.

When you wash polyester garments, you don’t need to worry about shrinking them. You can confidently use warm or even hot water without the fear of distorting the fabric. This makes polyester an excellent choice for durable clothing items that need regular washing.

Polyester Retains Its Shape

Another factor that contributes to polyester’s resistance to shrinking is its ability to retain its shape. Polyester fibers have a high level of elasticity, which means they can stretch and then spring back to their original form.

This elasticity helps polyester garments maintain their size and shape even after repeated wear and washing.

Unlike natural fibers that tend to lose their shape over time, polyester garments will continue to fit well and retain their original dimensions. This is especially important for items like fitted dresses or athletic wear, where maintaining the proper fit is crucial.

It’s worth noting that while polyester is resistant to shrinking, it can still be affected by other factors. For example, excessive heat or prolonged exposure to sunlight can cause polyester to weaken or fade.

Therefore, it’s always a good idea to follow the care instructions provided by the manufacturer to ensure the longevity of your polyester garments.

The Properties of Spandex that Prevent Shrinking

Spandex Retains Its Shape

One of the remarkable properties of spandex is its ability to retain its shape, even after several washes. Unlike other fabrics, spandex has excellent elastic recovery, meaning it can stretch and then return to its original shape without losing its elasticity.

This is due to the unique molecular structure of spandex, which consists of long-chain polymers that can be stretched up to five times their original length. So, even if you accidentally put your spandex garment in the dryer, you can be confident that it will bounce back to its original shape.

Spandex Regains Its Original Size

Another advantage of spandex is its ability to regain its original size. While some fabrics tend to shrink when exposed to heat or moisture, spandex has a high resistance to these factors. It can withstand the heat of the dryer or the hot water in your washing machine without undergoing significant shrinkage.

This is particularly beneficial for garments that are made with a blend of spandex and other fabrics, such as polyester. The presence of spandex helps to prevent the polyester from shrinking, ensuring that your clothing maintains its proper fit.

It’s worth mentioning that while spandex itself has excellent resistance to shrinking, the other fabrics in the blend can still be susceptible to shrinkage. Therefore, it’s essential to follow the care instructions provided by the manufacturer to ensure the longevity and proper care of your spandex garments.

Laundry Tips to Avoid Shrinking Polyester and Spandex

Polyester and spandex are commonly used materials in clothing due to their durability, stretchability, and comfort. However, one concern that many people have is whether these fabrics will shrink in the wash. Fortunately, there are several laundry tips you can follow to prevent shrinking and keep your polyester and spandex garments looking great.

Wash in Cool Water

When washing polyester and spandex, it is important to use cool water. Hot water can cause these fabrics to shrink, as the high temperature can damage the fibers. By using cool water, you can help maintain the integrity of the fabric and prevent any unwanted shrinkage.

Additionally, using a gentle or delicate cycle on your washing machine can further protect these materials.

Line Dry or Tumble Dry on Low

After washing, it is important to properly dry your polyester and spandex garments. Line drying is the best option, as it allows the fabric to air dry naturally without any risk of heat damage. If line drying is not possible, you can tumble dry on a low heat setting.

Avoid using high heat, as this can cause shrinkage. Remember to remove the garments from the dryer promptly to prevent any additional heat exposure.

Avoid High Heat When Ironing

If you need to iron your polyester or spandex clothing, it is crucial to avoid high heat. Polyester and spandex can melt or warp under high temperatures, leading to irreversible damage. Instead, use a low heat setting on your iron or consider using a pressing cloth to protect the fabric.

Take extra care when ironing delicate areas such as seams or embellishments.

By following these laundry tips, you can help preserve the shape and size of your polyester and spandex garments. Remember, prevention is key when it comes to avoiding shrinking. Treat your clothing with care, and they will continue to look great for years to come.

Signs of Shrinking in Polyester and Spandex

Polyester and spandex are two commonly used materials in clothing, known for their durability and stretchiness. However, one concern that many people have is whether these fabrics shrink after washing.

While polyester and spandex are generally resistant to shrinking, there are some signs to look out for to determine if your garment has indeed shrunk.

Tight Fit After Washing

One of the most noticeable signs of shrinking in polyester and spandex is a tighter fit after washing. If a garment feels more snug or constricting than before, it could be an indication that the fabric has shrunk.

This is especially true for clothing items such as shirts or pants that are meant to have a looser or relaxed fit. Keep in mind that some shrinkage is natural and expected, but excessive shrinkage may be a sign of poor quality or incorrect care.

Loss of Stretch in Spandex

Spandex is known for its exceptional stretchiness, which allows for comfortable movement and flexibility in clothing. However, if you notice a loss of stretch in your spandex garment after washing, it may be a sign of shrinkage.

This can make the fabric feel less comfortable and restrict your range of motion. To maintain the elasticity of spandex, it’s important to follow the care instructions provided by the manufacturer, such as washing in cold water and avoiding the use of harsh detergents or excessive heat.

It’s worth noting that not all polyester and spandex garments will shrink in the same way or to the same extent. The specific blend of materials, the quality of the fabric, and the care instructions can all influence the likelihood and degree of shrinkage.

If you’re unsure about how a particular garment will react to washing, it’s best to refer to the care label or consult the manufacturer’s website for guidance.

While there is no foolproof way to prevent shrinkage entirely, there are some measures you can take to minimize it. Avoid using hot water or high heat when washing and drying polyester and spandex garments, as heat can cause the fibers to contract and shrink.

Additionally, consider air drying your clothes instead of using a dryer, as excessive tumbling and heat can contribute to shrinkage.

What to Do if Your Polyester or Spandex Garment Shrinks

If you’ve ever experienced the disappointment of finding your favorite polyester or spandex garment has shrunk, don’t worry! There are a few steps you can take to try and restore it to its original size. Here are two methods you can try:

Soak in Conditioner Then Reshape

One method you can try is soaking your garment in a mixture of lukewarm water and hair conditioner. The conditioner helps to relax the fibers and restore some of the elasticity. Fill a basin or sink with lukewarm water and add a small amount of conditioner.

Gently agitate the water to mix in the conditioner. Then, place the shrunken garment in the water and let it soak for about 30 minutes. After soaking, carefully remove the garment and gently stretch it back to its original shape. Lay it flat to dry, reshaping it as necessary.

This method may help to loosen the fibers and allow the garment to regain some of its original size.

Wash in Cold Water and Line Dry

Another method to try is washing the shrunken garment in cold water. Cold water helps to prevent further shrinkage and can sometimes relax the fibers. Place the garment in a mesh laundry bag to protect it during the washing process. Use a gentle cycle and cold water setting on your washing machine.

After washing, remove the garment from the bag and carefully stretch it back to its original size. Avoid wringing or twisting the garment, as this can cause damage. Instead, gently squeeze out any excess water and lay it flat on a clean towel to dry.

Alternatively, you can hang the garment on a clothesline or drying rack to air dry. This method may help to gradually stretch the fibers and restore some of the lost size.

Remember, these methods may not work for all polyester and spandex garments, as individual fabrics and constructions can vary. It’s always a good idea to check the care label on your garment or consult with a professional cleaner for specific instructions.

If all else fails, you may need to consider altering or replacing the garment. But with a little patience and these simple techniques, you may be able to revive your shrunken clothing and enjoy it once again!


Polyester and spandex are designed not to shrink, but excessive heat can cause minor shrinking. Follow laundry care instructions, wash in cold water, avoid high heat drying, and reshape garments while damp to maintain the original size of polyester and spandex clothing.

Similar Posts