How to Wash and Dry a Wool Sweater Without Losing Its Shape

Read the Wash and Dry Instructions Before You Start

Wash a wool sweater by the method on its care label, then dry it flat in the shade unless the label allows a different method. A sweater that can go in the washer may still need to dry flat. Check both instructions before getting the knit wet.

Look inside the side seam or at the back of the neck for the care label. A tag that lists fiber percentages may sit beside a separate set of wash and dry symbols. Check the garment before choosing the machine’s wool program. The Woolmark guide to care symbols explains how to read each mark.

Machine wash permitted

Use a wool program that meets the garment’s temperature and cycle limits. Read the machine manual if the dial alone does not tell you how the program works.

Hand wash

Use a basin and the label’s temperature limit. A machine setting called Hand Wash still moves and spins the sweater.

Dry clean only or do not wash

A crossed-out wash tub rules out home washing. Read the separate professional-care symbol before choosing a cleaner. Bring the tag or a clear photo and point out any trim or stains.

Missing or unreadable instructions

Look up the exact garment or ask the maker. If you cannot confirm the instructions, especially for a structured or trimmed sweater, ask a cleaner before wetting it.

Clear a space wide enough for the shoulders and sleeves before you fill the basin or start the machine. Have a clean towel ready to support the sweater on the way there. This matters most when your only drying space is already full or has narrow bars that would leave most of the wet knit hanging.

Work out the wash and dry instructions as a pair

A 30 inside the wash tub sets a maximum of 30°C. One bar underneath calls for a mild cycle. Two bars call for a very mild cycle, such as a compatible wool program. A hand in the tub calls for hand washing. Then read the drying symbol. A single horizontal line in a square calls for flat drying. A crossed-out tumble-dryer symbol rules out tumbling, including an air-only cycle. Woolmark’s symbol guide shows how to tell the marks apart.

If the product page says “easy care,” follow the sewn-in instructions on the specific sweater. The top and trousers from a knit set can have separate labels, so check both before putting them in the same load.

Wash by the Method Your Label Allows

Machine wash a sweater labeled for it

Turn the sweater inside out or use a roomy mesh laundry bag. Keep it out of a load with rough denim, towels or exposed hardware. Use a mild detergent formulated for wool, at the dose on the detergent label for your load. Choose the appropriate wool program and the garment’s permitted temperature. A machine without a wool cycle may have a compatible gentle setting. Check the label and manual before relying on one. The Woolmark sweater-washing instructions explain the program and detergent choices.

Hand wash a sweater labeled for it

Fill a clean basin with water at the temperature the garment allows. Woolmark’s general hand-washing method starts with lukewarm water and wool detergent. Lower the sweater into the water and press it gently so the water reaches the whole knit. Use gentle movement and avoid scrubbing. Woolmark describes a brief soak of about 10 minutes for its standard sweater method. Follow any shorter limit or other restriction on your garment.

Drain the basin and rinse as the label directs. Woolmark’s standard method uses a lukewarm rinse followed by a cold one. Support the sweater as you change the water. If suds stay in a ribbed cuff, gently press clean rinse water through it. Press out the excess water without wringing, then carry the sweater with the sleeves tucked close to the body.

Support the Wet Knit, Then Dry It Flat

A wet sweater can stretch from its own weight. Gather it into both hands when you lift it from the washer or basin. Lay it on a clean, light-colored towel and roll the towel around it loosely. Press to absorb water, then unroll it. Move the sweater to a dry towel or a flat mesh rack.

1. Lay the shoulders, hem and sleeves flat. Ease the knit into its usual shape with your hands. Align the seams and smooth the neckline without pulling the garment wider or longer.
2. Give the knit air in the shade. Keep it away from a radiator and direct sun. Replace a saturated towel with a dry one. Arrange the sleeves so they do not sit on a thick fold of the body.
3. Feel the thicker sections before you put it away. The center of the sweater can feel dry while the thicker folds still hold moisture.

Check the ribbed cuffs, the underarm seam and the base of the hood or collar. Give those areas more time if they still feel damp.

The Woolmark guide to drying sweaters recommends flat drying unless your garment permits a tumble dryer. When the label specifically allows tumbling, use only the stated setting. Avoid hanging a wet wool knit from the shoulders to speed things up.

When the Washer Is Free but the Rack Is Full

Wait to wash a dry sweater until you have room to lay it flat. If it is already wet, a dry towel on a clean, water-resistant surface can stand in for the rack. Pick a spot wide enough for the shoulders and sleeves. If the towel soaks through, move the sweater to a dry one so it is no longer sitting against wet fabric.

When the thicker folds are dry, fold the sweater for storage. If the dry hem has twisted or one cuff sits higher, measure it flat and check whether the knit has distorted or felted before getting it wet again.