100% cotton typically shrinks 3-5% in length and width after the first wash.
100% cotton fabric shrinks due to the natural fibers contracting when exposed to heat and moisture. The amount of shrinkage depends on the weave, fabric weight, and whether the cotton is pre-shrunk. Most untreated cotton garments will experience their maximum shrinkage after the first wash and dry cycle.
Factors affecting cotton shrinkage
- Pre-shrinking: Pre-shrunk cotton has been treated to minimize shrinkage, typically reducing it to 1-2%
- Wash temperature: Hot water causes more shrinkage than cold water
- Drying method: High heat in dryers causes maximum shrinkage; air drying minimizes it
- Weave type: Looser weaves shrink more than tight weaves
Shrinkage comparison by treatment method
| Treatment Method | Shrinkage Percentage | Best For |
|---|---|---|
| Pre-shrunk | 1-2% | T-shirts, casual wear |
| Sanforized | 1-3% | Dress shirts, workwear |
| Untreated | 3-5% | Denim, raw fabrics |
How to minimize cotton shrinkage
- Wash in cold water
- Air dry or use low heat setting
- Remove from dryer while slightly damp
- Stretch garments gently while wet
Common cotton shrinkage myths
- Myth: Cotton only shrinks once - False, it can shrink slightly with each hot wash
- Myth: All cotton shrinks the same - False, weave and treatment matter significantly
- Myth: You can't unshrink cotton - Partially true, but you can relax fibers with conditioner soak