Cashmere Pilling: Why It Happens and How to Fix It

 

Those Little Bobbles on Your Sweater Aren't a Death Sentence

You've noticed small, fuzzy balls forming on the surface of your cashmere sweater. You're annoyed. You might even be questioning whether you bought a dud product.

Before you write it off: some pilling is completely normal, even on premium cashmere. It happens because loose fibre ends work their way to the fabric surface through friction. The good news is that learning how to remove pilling from cashmere properly is straightforward, and once you get past the initial settling period, a high-quality cashmere garment pills less and less over time.

Why Does Cashmere Pill?

Pilling occurs when short fibre ends migrate to the fabric surface and tangle together into small balls. Friction accelerates this process — areas where your body moves against the fabric (underarms, sides, where a bag strap sits) pill first.

Two factors determine how much a cashmere garment pills:

Staple length. Longer fibres (34mm+, typical of Grade A cashmere) have fewer exposed ends per unit of yarn. Fewer exposed ends means less material available to form pills. Short-staple cashmere (common in cheaper garments) pills dramatically more because the yarn is essentially full of loose fibre ends.

Yarn twist. Tighter yarn twist locks fibres in place more securely. Looser-twist yarns feel softer initially but release fibres more readily. Quality manufacturing balances twist for softness and durability.

This is why a £300 sweater made from long-staple Alxa cashmere pills far less aggressively than a £50 sweater made from short-staple blended fibre. The raw material quality directly determines pilling behaviour.

The Right Way to Remove Pills: Step by Step

What you need

• A cashmere comb (also called a pilling comb) — a small, fine-toothed metal comb designed specifically for knitwear
• A flat surface
• Good lighting

A cashmere comb costs approximately £5-15 and lasts indefinitely. It's the single best tool for the job. Electric fabric shavers work but carry more risk — they can cut through yarn if used too aggressively.

The technique

1. Lay the garment flat on a clean, hard surface. Do not hold it up or stretch it — you need the fabric taut but not under tension.

2. Hold the fabric taut with one hand, pressing it flat against the surface.

3. Comb in one direction only — short, gentle strokes with the cashmere comb, moving in the direction of the knit. Do not scrub back and forth. One direction. Light pressure.

4. Work in small sections. Focus on one area at a time (a 10cm square section) rather than trying to cover the whole garment in broad sweeps.

5. Remove the collected fibres from the comb teeth regularly. The pills will gather on the comb as you work.

6. Don't over-comb. Stop when the pills are removed. Excessive combing pulls healthy fibres from the yarn structure and thins the fabric over time. You're removing loose surface pills, not aggressively grooming the fabric.

What NOT to do

• Don't pull pills off with your fingers. You'll pull attached fibres out of the yarn and create a thin spot or a snag.
• Don't use a razor blade. This is an old trick that cuts through yarn as easily as it cuts pills. One slip ruins the garment.
• Don't use sticky tape or a lint roller as a de-pilling method. They remove surface lint but don't address pills, and the adhesive can leave residue on the fibre.

When to Expect Pilling — and When It Stops

Most new cashmere garments experience their heaviest pilling during the first few wears. This is the "settling period" — loose fibre ends left over from the manufacturing process working their way to the surface.

After you de-pill a new cashmere piece two or three times in the first season, the pilling typically decreases significantly. The remaining fibres are securely locked into the yarn structure, and fewer loose ends remain to cause problems.

If your cashmere garment is still pilling heavily after several months of wear and multiple de-pillings, that's a signal of lower-quality fibre (short staple, lower grade) or loose yarn construction.

How to Prevent Excessive Pilling

Prevention is better than treatment. Here's how to minimise pilling in the first place:

Avoid friction zones. Don't carry a rough-strapped bag over a cashmere shoulder. Avoid wearing cashmere under a heavy jacket with abrasive lining.

Rotate your cashmere. Wearing the same sweater multiple days in a row increases cumulative friction. Give fibres a day to recover their shape between wears.

Wash correctly. Aggressive washing causes more pilling than wearing does. Hand-wash gently, never wring, and flat dry.

Store folded, not hung. Hanging cashmere stretches it, and the hanger contact points become friction-and-pill zones. Always fold and lay flat.

The Bottom Line

Pilling is normal — even on premium cashmere — but the degree of pilling tells you a lot about fibre quality. Long-staple, fine-diameter cashmere settles quickly and pills minimally after the first season. A cashmere comb, gentle technique, and a few minutes of attention per garment is all it takes to keep the fabric surface smooth. This is one of the practical reasons we source exclusively long-staple Alxa fibre at Vionisxy — it's not just about initial softness, it's about how the garment looks and performs after the fiftieth wear.