How Do You Wash a Wool Throw Without Shrinking It?

By Snoozyn · Updated October 2026

Wool is one of the easiest fibres to live with and one of the easiest to ruin in a single wash. A throw that goes in too hot, or gets tumbled about, can come out smaller, thicker and stiff, and there is no real way back.

The good news is that a wool throw needs washing far less often than you might think. Here is when to wash, how to do it by hand, and how to dry it so it keeps its size and drape.

Can you wash a wool throw at home?

Yes. A wool throw can be washed at home by hand in cool water, but most of the time it does not need a full wash at all: airing and spot cleaning keep it fresh.

Wool sheds dust and resists odours well, so a throw that lives on a sofa can go months between washes. Shake it out and hang it outside on a dry, breezy day, out of strong sun, or over a chair by an open window. Deal with spills as they happen. Save the full wash for when it is visibly grubby, or once or twice a year.

Method	When to use it	How often
Shake and air	Routine freshening	Every few weeks
Spot clean	Small spills and marks	As they happen
Hand wash, 30°C max	All-over grubbiness	Once or twice a year
Dry clean	Large, heavy or fringed pure wool	When hand washing is impractical

Why does a wool throw shrink in the wash?

Wool shrinks because each fibre is covered in tiny overlapping scales. Heat, rubbing and sudden changes in water temperature open those scales and push them together until they lock, so the cloth felts and contracts.

Felting is permanent. A throw that has felted is denser, stiffer and smaller, and the pattern can blur. The three things to control are warmth, movement and shock: use cool water, handle the throw as little as possible, and never move it from warm water to cold. Biological detergents are a fourth risk, because the protease enzymes they contain are designed to break down protein, and wool is a protein fibre.

How do you wash a wool throw by hand?

To wash a wool throw by hand, soak it in cool water with a wool detergent for about ten minutes, press the water through gently, then rinse in water of the same temperature without wringing.

1. Shake the throw out and treat any marks first with a dab of wool detergent.
2. Fill a clean bath with enough cool water, no warmer than 30°C, to cover the throw. Dissolve a non-biological wool detergent in it.
3. Lay the throw in and press it under. Let it soak for about ten minutes.
4. Squeeze the water through the cloth with flat hands. Do not rub, scrub or twist.
5. Drain the bath, refill with water of the same temperature and press again to rinse. Repeat until no suds remain.
6. Drain and press the throw against the bottom of the bath to push out as much water as you can.

Wet wool is heavy, so lift the throw out bundled in your arms rather than by one edge, which can stretch it out of shape. For general washing advice across cotton, linen and knits, see our throw-washing guide by fabric.

How do you dry a wool throw without it shrinking?

Roll the wet throw in a large towel to absorb the excess water, then dry it flat on a towel-covered airer or bed, away from radiators, fires and direct sun. Never tumble dry it.

Turn it over every few hours so both sides dry evenly. A 150×200 cm throw can take a day or more, so give it room and patience. While it is damp, ease it back to its original shape with your hands and smooth the fringe or tassels straight with your fingers. Hanging a wet throw from a washing line pulls it longer and narrower, so wait until it is almost dry before draping it over a line to finish.

Does a wool blend throw wash differently from pure wool?

Not much. Blends with acrylic or polyester felt less readily than pure wool, but they still shrink and pill with heat and rough handling, so give them the same gentle cool wash by hand.

The higher the wool content, the more care it needs. A throw that is 80% polyester and 20% wool is far more forgiving than a 100% lambswool one, but the care for the wool blends we sell is still the same as for pure wool: a cool wash by hand or dry cleaning, dry flat, no bleach, no tumble dryer. Any throw may pill a little in use, which is a separate issue covered in why throws shed and pill.

Which of our wool throws need this care?

All of them. Every pure wool, lambswool, merino and wool blend throw we sell carries the same instruction: air often, spot clean, otherwise hand wash in cool water with wool detergent or dry clean, and dry flat.

That includes the oat pure wool throw with a contrast-stripe edge from £94.90, the knitted grey merino throw at £140.90 and the fringed lambswool throw with a key border at £122.90. For a large fringed pure wool piece like that one, dry cleaning is often the simplest choice. Between washes, store wool clean and dry, because moths go for soiled wool first; our guide to storing throws and keeping moths off wool has the details. Wool rugs follow a similar logic, covered in cleaning a rug at home.

Frequently asked questions

Can you put a wool throw in the washing machine?

Some wool items are labelled for a machine wool cycle, but the throws we sell are hand wash or dry clean only. A machine’s drum movement and spin are exactly the agitation that causes felting, so hand washing is the safer choice.

Can you tumble dry a wool throw?

No. The heat and tumbling of a tumble dryer are the quickest way to felt and shrink wool. Roll the throw in a towel to remove water, then dry it flat, turning it over every few hours.

How often should you wash a wool throw?

Once or twice a year is usually enough. Wool resists odours and sheds dust well, so regular airing and prompt spot cleaning keep a wool throw fresh between washes.

Can you fix a wool throw that has shrunk?

Felting cannot be fully reversed. Soaking the throw in lukewarm water with a little hair conditioner, then gently easing it out and drying it flat, can relax the fibres slightly, but expect only a small improvement.

What detergent is safe for a wool throw?

Use a non-biological, pH-neutral wool detergent. Avoid biological powders, because their protease enzymes break down protein fibres such as wool, and never use bleach on any wool throw.

Should you iron a wool throw?

Usually not. Creases drop out as the throw dries flat. If one persists, hold a steam iron just above the surface, or iron on the wool setting through a damp cotton cloth.