Nothing beats the cozy feeling of a soft, fluffy sweatshirt. But after a few washes, many sweatshirts lose their plush texture, becoming rough and worn out. How can you keep the inside of your sweatshirt fluffy for as long as possible?
To maintain the fluffiness inside a sweatshirt, wash it in cold water, use mild detergent1, avoid fabric softeners2, and air dry or use low heat when drying. Brushing the fabric occasionally can also help restore its softness.
Let’s explore the best techniques to preserve your sweatshirt’s soft interior and prevent it from becoming stiff over time.

Why does the inside of a sweatshirt lose its fluffiness?
Over time, sweatshirts lose their softness due to washing methods, heat exposure, and fabric wear. The fluffy texture inside most sweatshirts is created by brushed fleece or soft cotton fibers, which can break down with improper care.
The main causes of sweatshirt fabric losing its fluff include high heat, harsh detergents, excessive friction, and fabric softener buildup.
Factors that damage sweatshirt fluffiness
| Cause | How It Affects Softness |
|---|---|
| Hot water washing | Breaks down fabric fibers, making them rough |
| Harsh detergents | Strips away natural softness |
| Fabric softeners | Creates residue buildup, making fabric stiff |
| High heat drying | Shrinks and damages soft fibers |
| Friction from washing | Causes pilling and flattening of the fabric |
Avoiding these common mistakes helps maintain your sweatshirt’s cozy texture.
What is the best way to wash a sweatshirt to keep it soft?
Washing a sweatshirt correctly is the key to maintaining its fluffy interior. Improper washing can cause fibers to break down, leading to a rough texture.
To keep a sweatshirt soft, wash it inside out with cold water, use a mild detergent, and avoid fabric softeners or bleach. Choose a gentle wash cycle to minimize friction.
Step-by-step guide for washing a sweatshirt
- Turn it inside out – This protects the soft fleece interior from direct abrasion.
- Use cold water – Hot water weakens fibers, leading to roughness.
- Choose a gentle detergent – Harsh chemicals strip fabric softness.
- Select a delicate cycle – Reduces friction that flattens fibers.
- Avoid fabric softeners – They coat fibers, reducing fluffiness.
Following these steps ensures your sweatshirt stays soft after multiple washes.

How should you dry a sweatshirt to prevent stiffness?
Drying is just as important as washing when it comes to keeping a sweatshirt fluffy. The wrong drying method can ruin the fabric’s softness.
Air drying is the best method for preserving sweatshirt fluffiness. If using a dryer, select a low heat setting and add dryer balls to prevent fiber clumping.
Best drying techniques
| Drying Method | Effect on Softness |
|---|---|
| Air drying (best option) | Preserves fibers and prevents shrinking |
| Low heat tumble drying | Helps fluff fibers but should be used sparingly |
| High heat drying (avoid) | Causes fiber damage, shrinking, and stiffness |
For best results, reshape the sweatshirt while damp and let it air dry flat.
Can brushing help restore sweatshirt fluffiness?
If your sweatshirt has already lost its softness, brushing the fabric can help bring back its plush feel.
Using a fabric brush or a clean toothbrush, gently comb the fleece inside the sweatshirt to lift and separate fibers, restoring softness.
How to brush a sweatshirt’s fleece interior
- Lay the sweatshirt flat – Ensure the inside is facing up.
- Use a fabric brush or toothbrush – Gently brush in small circular motions.
- Fluff up flattened areas – Focus on rough patches that need extra softness.
- Wash and dry correctly afterward – Maintain the newly restored fluffiness.
This method works well for older sweatshirts that have lost their original softness.
What are the best detergents for keeping sweatshirts fluffy?
The type of detergent you use affects how soft your sweatshirt remains after washing. Some detergents contain harsh chemicals that damage fleece fibers.
Mild, fragrance-free detergents designed for delicate fabrics help preserve a sweatshirt’s softness. Avoid bleach, strong stain removers, and fabric softeners.

Recommended types of detergents
| Detergent Type | Effect on Softness |
|---|---|
| Gentle, mild detergent | Best for preserving fluffiness |
| Baby detergent | Designed for soft fabrics, gentle on fleece |
| Regular detergent | Can be harsh and break down fibers |
| Bleach or strong stain remover (avoid) | Causes roughness and fading |
Choosing the right detergent makes a big difference in maintaining sweatshirt quality.
How do fabric softeners affect sweatshirt fluffiness?
Many people assume that fabric softeners help keep clothing soft, but they can actually have the opposite effect on sweatshirts.
Fabric softeners coat fleece fibers, making them feel stiff over time. Instead, use white vinegar as a natural alternative to break down detergent buildup and keep the fabric fluffy.
How to use vinegar as a natural fabric softener
- Add ½ cup of white vinegar to the rinse cycle (it won’t leave a smell).
- Vinegar helps remove residue, keeping the fleece interior soft.
- Use once every few washes for best results.
This simple trick restores sweatshirt softness without damaging the fabric.
How can you prevent pilling inside a sweatshirt?
Pilling occurs when small fabric balls form on the surface of fleece, making it feel rough instead of soft.
To prevent pilling, wash sweatshirts inside out, use a gentle cycle, and avoid overloading the washing machine. Shaving off existing pills with a fabric shaver helps restore softness.
Tips for reducing pilling
| Prevention Method | Effect on Fabric |
|---|---|
| Washing inside out | Protects fleece from friction |
| Gentle cycle | Reduces fiber wear |
| Fabric shaver | Removes existing pills, restoring smoothness |
| Avoiding rough fabrics in the wash | Prevents lint transfer and further pilling |
These techniques help extend the life of your sweatshirt while maintaining its soft texture.
Conclusion
Keeping the inside of a sweatshirt fluffy requires proper washing, drying, and maintenance techniques. Use cold water, mild detergent, and air drying3 to preserve fleece softness. Avoid fabric softeners, use vinegar as a natural alternative, and brush the fabric occasionally to maintain its plush feel. With the right care, your sweatshirt can stay cozy and comfortable for years to come.
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Explore this link to find the best mild detergents that help maintain the softness of your sweatshirts, ensuring they stay fluffy longer. ↩
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Learn how fabric softeners can harm your sweatshirt’s texture and discover alternatives to keep it soft and cozy. ↩
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Discover the advantages of air drying your sweatshirts to preserve their fluffiness and extend their lifespan. ↩





