What to Do When

Practical guide

What to do when a sweater develops pills

Updated 22 September 202611 min read

Laundry problems

What to do when a sweater develops pills

By Marcin Pacześny · Updated September 22, 2026 · 30 situations

Small balls on a sweater are called pills. They form when loose fibers rub together. Start by laying the sweater flat and checking the care label. Remove pills gently from the surface; do not pull them with fingers, because that can stretch fibers and make a small problem worse.

The right method depends on the knit, fiber, and condition of the garment. This guide covers 30 situations, from new acrylic sweaters to fine cashmere, dark lint, damaged sleeves, and washing mistakes. If loose fuzz comes from other clothes, also read what to do when clothes are covered in lint.

Quick answer: Work on a clean, flat surface. Hold the fabric smooth without stretching it and use a sweater comb, fabric shaver, or tool approved for that knit. Test a hidden area first. Stop if threads lift, the knit thins, or a hole appears.

What to do when pills first appear

What to do when there are only a few pills

Lay the sweater flat and remove each pill with a sweater comb or a small fabric shaver. Work in one direction with light pressure. Do not pinch and pull the pills. Pulling can draw long fibers out of the yarn and leave a weak, fuzzy patch.

What to do when pills cover the whole front

Divide the sweater into small sections and clean one section at a time. Empty the shaver often so it does not drag. Compare the treated area with an untreated one in good light. Stop before the surface looks thinner than the rest of the knit.

What to do when pills appear after the first wear

Check where they formed. Pills under the arms, at the sides, or under a bag strap point to rubbing. A new sweater may release short surface fibers early, but heavy pilling after one wear can also show a weak yarn. Keep the receipt and photograph the problem.

What to do when pills look worse after washing

Check the care label and the cycle used. Heat, a long wash, fast spinning, and rubbing against rough items can increase pilling. Remove pills only after the sweater is clean and dry. Next time, turn it inside out and wash it with soft, similar garments.

What to do when the sweater still looks good from a distance

Do not over-treat it. Remove only the largest pills and leave the sound surface alone. Every pass of a shaver or comb removes some fiber. A small amount of pilling is normal on many soft knits and does not mean the sweater is ruined.

What to do when choosing a pill-removal tool

What to do when using a fabric shaver

Put the sweater on a hard, flat surface. Check that the shaver head is clean and not damaged. Move it lightly over a small test area without pressing into the knit. Keep fabric away from the holes in the guard and stop at loose threads or seams.

What to do when using a sweater comb

Hold the fabric flat and comb gently in one direction. A comb works well on many firm knits but may catch an open or very soft knit. Clean the comb as fibers collect. Do not scrub back and forth as if cleaning a stain.

What to do when using a sweater stone

Test it on an inside area because a stone can be too rough for delicate yarn. Use short, light strokes and keep crumbs away from the garment. A stone is better suited to sturdy fabrics than fine cashmere or a loose decorative knit.

What to do when scissors are the only tool available

Use small sharp scissors only for a few raised pills. Keep the blades parallel to the surface and never lift the fabric with the pill. Work in strong light. Do not cut near a loose loop, seam, or thin patch.

What to do when a razor is suggested online

A bare razor can cut yarn, seams, and fingers. Use a guarded fabric shaver instead. If no safe tool is available, leave the pills until later. A worn look is easier to fix than a sliced knit or a hole.

What to do when the sweater fiber changes the method

What to do when a wool sweater pills

Read the label because wool knits vary widely. Let the sweater dry fully and return to its natural shape. Use a tool made for knitwear with very light pressure. Store it folded, since a hanger can stretch damp or heavy wool.

What to do when a cashmere sweater pills

Use a fine cashmere comb if the maker allows it. Work slowly on a flat surface and avoid cuffs, seams, and any thin area. Cashmere may pill where it rubs during early wear. Frequent aggressive shaving shortens the life of the garment.

What to do when an acrylic sweater pills

Synthetic pills can stay firmly attached because the fibers are strong. A guarded fabric shaver usually gives more control than pulling. Make several light passes instead of one hard pass. Reduce friction in future washes by turning the sweater inside out.

What to do when a cotton sweater pills

Check whether the surface has pills or loose lint. A lint roller removes fibers sitting on top but will not cut attached pills. For true pills, use a fine comb or shaver carefully. Wash with similar soft items and avoid rough towels.

What to do when the fiber label is missing

Treat the sweater as delicate. Test a hidden spot near the inside hem with the least aggressive tool. If the knit is open, hairy, or very thin, stop and ask a cleaner or tailor. Do not guess that a soft sweater is cashmere or wool.

What to do when pilling appears in one area

What to do when pills form under the arms

This area rubs with every movement. Remove pills lightly and check for thinning before continuing. Wear a smooth layer underneath and avoid packing the sleeves tightly under a coat. Repeated heavy shaving can weaken the underarm faster than the rest.

What to do when a bag strap causes pills

Change the shoulder or carry the bag by its handle when wearing the sweater. A rough strap can keep making new pills no matter how carefully they are removed. Smooth the affected area once, then focus on stopping the repeated friction.

What to do when a seat belt rubs the sweater

Safety comes first, so do not move or loosen the seat belt. Wear a smooth outer layer between the belt and the knit, or choose a sturdier sweater for long trips. Treat the pills later with the sweater flat.

What to do when cuffs become fuzzy

Check whether cuffs rub against a desk, coat, or watch. Use a small tool with extra care around the ribbed edge. Do not stretch the cuff flat with force. If the ribbing has lost shape, pill removal will not restore its elasticity.

What to do when the side facing a desk is worse

Look for a rough desk edge or repeated contact while working. Cover the edge or change arm position. Remove the current pills once; cleaning the same patch every week will keep taking fibers away without solving the cause.

What to do when washing and drying cause pilling

What to do when the sweater was washed with towels

Towels create friction and release lint. Separate them from knits in future loads. Follow the sweater label for water temperature and cycle, and use a mesh laundry bag if allowed. If lint remains after washing, use the guide for clothes covered in lint.

What to do when the washing machine was packed full

A packed drum makes clothes rub instead of moving freely. Wash a smaller load and keep rough fasteners away from the knit. Close zippers before washing; if one will not move, repair the stuck zipper before it can snag other clothes.

What to do when the sweater went through a tumble dryer

Heat and tumbling can increase rubbing or change the sweater’s shape. Check the care label before any future drying. Let the garment cool, then inspect it flat. If it shrank or felted, shaving pills will improve only the surface, not restore the original size.

What to do when detergent residue makes the surface rough

Look for pale marks or a stiff feel. Do not add another product on top. Follow the label and rinse the sweater correctly. Check the guide for detergent marks left by a washing machine if residue appears on other clothes too.

What to do when the sweater takes a long time to dry

Do not hang a heavy wet sweater from the shoulders. Press out water as the label directs, reshape it, and dry it flat with airflow. The guide to laundry that dries slowly indoors explains how to manage room moisture safely.

What to do when pilling may mean damage

What to do when a long loop appears

Do not cut it like a pill. A loop may be part of the yarn pulled out of place. Ease it gently toward the inside with a blunt tool or ask a knitwear repairer. Cutting the loop can open the yarn and create a hole.

What to do when a thin patch appears under the pills

Stop shaving or combing. Hold the sweater up to light and compare the patch with nearby fabric. A thin area needs reinforcement or professional repair before it breaks. More surface cleaning will only remove fibers the patch still needs.

What to do when a small hole appears

Keep the hole from stretching and do not wear or wash the sweater again yet. Store it flat and arrange a knit repair. If the hole may be from insects, inspect nearby stored clothes and read what to do when stored clothes have moth holes.

What to do when the sweater is expensive or sentimental

Stop after a small hidden test. A knitwear specialist can match the treatment to the yarn and repair weak areas before cleaning the surface. The cost may be worthwhile when replacement is difficult or the garment has personal value.

What to do when pills return after every wear

Track where they return and what touches that area. Change the source of friction before removing them again. If pilling is fast across the whole garment, the yarn construction may be the cause. Decide whether light maintenance is acceptable or a return claim is reasonable.

Frequently asked questions

Does pilling mean a sweater is low quality?

Not always. Soft and short fibers can pill even in expensive garments. Speed, amount, yarn strength, and where the pills appear give more useful clues than price alone.

How often can a sweater be shaved?

Only when needed, and with light pressure. Every treatment removes fiber. Stop when the surface looks even rather than trying to make an old sweater look perfectly new.

Can a lint roller remove pills?

A lint roller lifts loose hair and lint. It does not safely remove pills that are still attached to the yarn.

Can pilling be prevented completely?

No. You can reduce it by lowering friction, washing gently with similar fabrics, following the care label, and storing the sweater folded, but some yarns will still pill.