How to Wash a Wool Jumper Without Ruining It

Wool is one of the most beautiful, warm, and durable fabrics in the world — but it's also one of the most unforgiving to wash incorrectly. One wrong cycle and your favourite jumper shrinks to half its size, goes bobbly, or loses its shape permanently.

Here's the exact method to wash wool jumpers correctly every time.

Can you machine wash wool?

Yes — but only on the right setting. Modern washing machines have a dedicated wool or delicate cycle that uses cold water and minimal agitation. This is safe for most wool jumpers. What destroys wool is hot water and high-spin cycles — both cause irreversible shrinkage and matting.

Step-by-step: how to wash a wool jumper

1. Check the label first — some wool items are dry clean only. If the label says hand wash only, follow that.
2. Turn inside out — reduces surface friction and protects the outer fibres
3. Use a wool detergent — never regular detergent. Wool wash or Woolite are ideal. Regular detergent contains enzymes that break down protein fibres in wool.
4. Set machine to wool or delicate cycle — max 30°C, low spin (600rpm or less)
5. Use a mesh laundry bag — prevents snagging on other items
6. Never tumble dry — lay flat on a clean towel to dry
7. Reshape while damp — gently pull back to original dimensions and leave flat

How to hand wash wool

For fine or expensive wool, hand washing is safer. Fill a basin with cool water (max 30°C), add a small amount of wool wash, submerge the jumper and squeeze gently for 2–3 minutes. Rinse thoroughly with cool water — never wring. Squeeze out excess water gently and lay flat to dry.

What to do if your wool jumper has bobbles

Pilling is completely normal on wool — it happens through friction and washing. The safe way to remove pills is with the LintGone Pro on Speed 1. The low-speed floating head glides over wool without pulling threads, removing every pill cleanly in under a minute.

How often should you wash wool?

Much less than you think. Wool is naturally antibacterial and odour-resistant. Most wool jumpers only need washing every 5–10 wears. Between washes, air the jumper overnight by hanging it near an open window — this refreshes the fibres without any water.