How To · Fashion · Garment Care
Prevent Pilling on Wool and Cashmere Before It Starts
Pilling happens when short fibers work loose and tangle into balls on the surface—but it's largely preventable with the right storage, wearing, and washing habits. Here's how to keep your investment pieces pristine.
5 min read · IrisPilling is the small fuzzy balls that appear on wool and cashmere after wear or washing. It's not a sign of poor quality—even luxury pieces pill. It happens because shorter fibers in the yarn break free and tangle together on the surface. The good news: most pilling is preventable if you treat your knits with intention.
The key is reducing friction, managing moisture, and choosing your wearing patterns carefully. None of this requires special products or elaborate routines. Just five straightforward habits that take almost no extra time.
Pilling isn't a defect. It's friction. Minimize friction, and you've solved the problem.
What you'll need.
- 01Drawer or shelf space
- 02Cedar blocks or lavender sachets
- 03Wool-specific detergent or baby shampoo
- 04Clean, dry towels
- 05Fabric comb or pilling stone
Step one · 2 minutes
Fold, don't hang, in a breathable drawer
Hanging wool and cashmere creates constant tension and friction against the hanger and neighboring garments. Fold your sweaters instead and stack them flat in a drawer or shelf. Use cedar blocks or lavender sachets to deter moths without trapping moisture. Keep them away from direct sunlight, which weakens fibers over time. Air the drawer weekly to prevent mustiness.
If you must hang a piece temporarily, use a padded hanger and give it breathing room—at least two inches on either side.
Step two · 1 minute
Wear it less frequently and rotate pieces
The more you wear a sweater, the more friction it experiences. Pilling accelerates with constant use. Rotate your wool and cashmere pieces so no single sweater gets worn more than once or twice a week. This gives fibers time to recover and reduces cumulative wear. A five-piece rotation is ideal; even three pieces helps significantly.
Mark your calendar or use a note in your phone to track which sweater you wore last.
Step three · 3 minutes
Wash by hand in cold water with a gentle detergent
Machine washing creates agitation that loosens fibers and causes pilling. Hand wash instead in cold water using a wool-specific detergent or baby shampoo. Submerge the sweater for five minutes, gently squeeze soapy water through the fabric (don't wring), then rinse in fresh cold water until the water runs clear. This removes dirt and oils that weaken fibers without the trauma of a machine cycle.
Wash only when necessary—spot-clean small stains instead of full washes when possible.
Step four · 2 minutes
Dry flat on a clean towel, never in the dryer
Heat and tumbling are pilling accelerators. After washing, gently squeeze out excess water without wringing. Lay the sweater flat on a clean, dry towel, reshape it to its original dimensions, and let it air dry completely. Flip it halfway through if one side is still damp. Never use a clothes dryer, even on low heat.
Lay it on a white towel to check that no dyes are bleeding from the garment.
Step five · 2 minutes
Use a fabric comb or pilling stone only as a last resort
If pilling does occur despite your best efforts, a fabric comb or pilling stone can remove surface balls gently. Brush lightly in one direction, using minimal pressure. This is damage control, not prevention. Aggressive combing can thin the fabric and make future pilling worse. Use this method sparingly—ideally once or twice per season at most.
Test on an inconspicuous area first. Never use a razor blade or rough pumice, which will shred the fibers.
How to know it's working.
Your sweaters should maintain their smooth surface and original shape after repeated wears and washes. If you notice minimal to no new pilling after three months of following these steps, your routine is effective. The fabric should feel soft and look dense, not thin or fuzzy.
Questions at the mirror.
My sweater already has pilling. Can I fix it?
Yes, but gently. A fabric comb or pilling stone removes surface balls, but this won't prevent future pilling. Focus on prevention going forward. If pilling is severe or widespread, the sweater may have been made with shorter-staple fibers that are prone to pilling regardless of care.
Is pilling a sign the sweater is low quality?
Not necessarily. Even high-end cashmere and merino wool pill if worn frequently or washed improperly. Lower-quality knits may pill faster because they use shorter fibers, but pilling itself is a friction issue, not a quality issue.
Can I prevent pilling entirely?
Almost. With careful rotation, proper washing, and flat storage, you can reduce pilling to nearly nothing. Some minimal pilling may still occur with very frequent wear, but it will be minimal and manageable.
How often should I wash wool and cashmere?
Less often than you think. Wash only when visibly soiled or after several wears. Spot-clean stains instead. Most wool and cashmere can go 5–10 wears between washes without smelling or looking dirty.