Clothes shrinking is one of the most frustrating laundry problems. Your favorite T-shirt fits perfectly… until one wrong wash makes it tight, short, or warped. Here’s the science behind why fabrics shrink and how to stop it forever.
1. The Science: Relaxed Fibers Tighten Under Heat
When fabric is made, fibers are stretched. Heat (hot water or dryer) makes fibers contract back to their natural length → shrinkage.
2. Cotton Shrinks the Most
Especially 100% cotton. Pre-shrunk cotton shrinks less but still reacts to heat.
3. Wool Shrinks by Felting
Wool fibers interlock when exposed to hot water + agitation → irreversible shrinkage.
4. Polyester Rarely Shrinks
But can melt or deform under high heat.
5. Blends Shrink Unevenly
Example: Cotton + polyester Cotton shrinks, polyester doesn’t → twisted seams, uneven length.
6. Main Causes of Shrinkage
- Hot water washing
- High heat dryers
- Harsh agitation
- Long dry cycles
7. How to Prevent Shrinking Completely
- Wash cold always
- Use gentle cycle
- Air-dry T-shirts & hoodies
- Dry flat for sweaters
- Use “low heat” if dryer is necessary
8. How to Fix Minor Shrinkage
Use conditioner soak:
- Soak in lukewarm water + 1 tbsp conditioner
- Stretch gently
- Dry flat
Internal Links
See also:
– How to Fix Shrunken Clothes
– How to Wash Cotton the Right Way
Final Tip: Shrinking happens from heat + agitation. Avoid these, and your clothes keep their perfect shape.
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