Cotton sweatshirts are among the most comfortable and versatile pieces of clothing you can own. However, they can sometimes be too big or stretch out over time. If you’ve ever found yourself with an oversized cotton sweatshirt that you wish was just a bit smaller, there’s good news: it’s relatively easy to shrink cotton garments, including sweatshirts, with the right methods. This article will walk you through the step-by-step process of how to safely shrink a cotton sweatshirt without damaging it, along with some tips on maintaining its new size.
Why shrink a cotton sweatshirt?
There are several reasons why you might want to shrink a cotton sweatshirt:
- Improper Fit: Sometimes, sweatshirts can be purchased or gifted in the wrong size. Shrinking can help tailor the fit.
- Stretching Over Time: Cotton tends to stretch with wear, especially around the cuffs, neckline, and body. Shrinking can restore the sweatshirt to its original size.
- Style Preferences: Some people prefer a snugger, more fitted look for their sweatshirts.
Cotton is a natural fiber that responds well to heat, which makes it relatively easy to manipulate the size of cotton garments through controlled shrinking.
Understanding cotton’s shrinking properties
Cotton is a breathable, durable fabric that naturally shrinks when exposed to heat and moisture. When the cotton fibers are exposed to hot water or hot air, they contract, which leads to the overall garment shrinking. The key to shrinking cotton is controlling the temperature and duration of exposure to ensure that you achieve the desired size without causing damage or shrinking the item too much.
Tools and materials you will need
To shrink your cotton sweatshirt, gather the following items:
- Hot water: The primary agent for shrinking.
- Large pot or washing machine: To soak the sweatshirt in hot water.
- Towel: For drying the sweatshirt after shrinking.
- Hairdryer (optional): For more targeted shrinking.
- Dryer: To further shrink the sweatshirt with controlled heat.
- Measuring tape (optional): To measure the sweatshirt before and after shrinking.
Step-by-Step guide to shrinking a cotton sweatshirt
1. Boil the sweatshirt in hot water
The simplest way to shrink a cotton sweatshirt is to use boiling water. Here’s how:
- Boil water in a large pot: Fill a large pot with water and bring it to a boil.
- Submerge the sweatshirt: Once the water is boiling, turn off the heat and carefully submerge the sweatshirt into the pot. Ensure that the entire sweatshirt is fully submerged.
- Let it soak: Leave the sweatshirt in the hot water for about 10 to 15 minutes. The longer you leave it, the more it will shrink.
- Remove and dry: After soaking, carefully remove the sweatshirt from the water using tongs or a spoon. Be cautious as the fabric and water will be hot. Allow the sweatshirt to cool before wringing out the excess water. Lay it flat on a towel to dry.
This method works best for shrinking the entire garment, and it’s ideal for when you want a significant size reduction.
2. Wash and dry on High Heat
Another method to shrink your cotton sweatshirt is by using your washing machine and dryer. This approach provides more control over the shrinking process and can be repeated if the sweatshirt doesn’t shrink enough the first time.
- Wash in hot water: Place the sweatshirt in your washing machine and set it to the hottest water setting available. The heat from the water will cause the cotton fibers to contract.
- Use detergent: Adding detergent can help loosen the fibers, making it easier for the material to shrink.
- Dry on high heat: Once the washing cycle is complete, immediately transfer the sweatshirt to the dryer and set it to the highest heat setting. The heat from the dryer will continue to shrink the fabric.
- Check the size: Once the dryer cycle is finished, check the size of the sweatshirt. If it hasn’t shrunk enough, you can repeat the process.
This method is gentler than boiling, and it works well for gradual shrinking, allowing you to fine-tune the size of the sweatshirt.
3. Use a hairdryer for targeted shrinking
If you only want to shrink certain parts of the sweatshirt, such as the cuffs, waistband, or neckline, a hairdryer can be an effective tool for more targeted shrinking.
- Dampen the area: Use a spray bottle or damp cloth to wet the specific areas of the sweatshirt you want to shrink.
- Use a hairdryer on high heat: Set the hairdryer to its highest heat setting and direct the airflow at the dampened areas. Move the hairdryer back and forth to evenly distribute the heat.
- Continue drying: Keep drying the area until it’s fully dry and has shrunk to your desired size.
This method allows for precise control and is great for adjusting the fit of specific parts of the sweatshirt without affecting the entire garment.
4. Repeat the process if necessary
Cotton can shrink up to 20% of its original size, but the amount of shrinkage depends on the fabric’s weave and how long it’s exposed to heat. If your sweatshirt hasn’t shrunk as much as you’d like after one round of treatment, repeat the process until it reaches the desired size.
Maintaining the size of your shrunk sweatshirt
Once you’ve successfully shrunk your sweatshirt, you’ll want to maintain its new size. Here are some tips for preventing it from stretching out again:
- Wash in cold water: Cold water helps preserve the size of the garment and prevents further shrinkage or stretching.
- Air dry or tumble dry on low heat: High heat can cause the sweatshirt to shrink even more, so it’s best to avoid using high heat in the dryer.
- Avoid pulling or stretching: When putting on or taking off the sweatshirt, be gentle to avoid stretching out the fabric.
Things to keep in mind
- Not all cotton shrinks the same: The thickness of the fabric and whether it’s a cotton blend will impact how much the sweatshirt shrinks.
- Control the amount of shrinking: If you’re unsure about how much the sweatshirt will shrink, err on the side of caution. Start with a short amount of heat exposure and gradually increase it if needed.
- Expect some change in texture: Shrinking cotton can sometimes alter the feel of the fabric, making it slightly stiffer. This can often be remedied with fabric softener.


Q&A Section
How much will a cotton sweatshirt shrink?
Cotton sweatshirts typically shrink about 5-20% of their original size. The amount of shrinkage depends on the fabric’s weave, thickness, and how long it is exposed to heat. Heavier cotton fabrics may shrink less than lighter ones, and cotton blends might not shrink as much as 100% cotton garments. Repeating the shrinking process can lead to further size reduction.
Can I shrink a cotton sweatshirt without damaging it?
Yes, you can shrink a cotton sweatshirt without damaging it if you use controlled heat and avoid over-shrinking. Washing the sweatshirt in hot water and drying it on high heat are effective methods, but avoid leaving the garment in extreme heat for too long, as this can cause the fabric to become stiff or the colors to fade.
What if my sweatshirt is a cotton blend? Will it still shrink?
Cotton blends will shrink, but not as much as 100% cotton. The amount of shrinkage depends on the other materials in the blend. For example, a cotton-polyester blend may shrink less because polyester is resistant to shrinking. You can still use hot water and high heat to shrink cotton blends, but expect a more moderate reduction in size.
Can I control how much my sweatshirt shrinks?
Yes, you can control how much your sweatshirt shrinks by adjusting the amount of heat and the time it is exposed to it. Start with shorter exposure to hot water or dryer heat, then check the size of the sweatshirt. If it hasn’t shrunk enough, you can repeat the process to achieve more shrinkage.
Will shrinking a sweatshirt affect its texture or feel?
Shrinking a cotton sweatshirt can sometimes alter its texture, making the fabric feel slightly stiffer or rougher, especially if exposed to high heat. Using fabric softener in the wash or drying the sweatshirt with dryer sheets can help restore its softness. Additionally, avoid shrinking the sweatshirt too often, as repeated exposure to heat can degrade the fabric over time.