How to wash a cashmere sweater without ruining it: The complete guide to longevity

Cashmere – luxurious, soft, and exclusive. But also delicate. Many wonder: How do you wash a cashmere sweater without ruining it? The answer is simple – but requires knowledge and the right technique. In this comprehensive guide, you will learn exactly how to care for your cashmere sweater so that it stays beautiful for years.

 

💡 Why is cashmere so delicate to wash?

Cashmere comes from the undercoat of the cashmere goat. The fibers are:

• Incredibly fine (6–18 microns compared to 30+ for regular wool)

• Naturally soft and lack the coarseness wool often has

• Elastic but fragile, making them sensitive to heat, friction, and movement

Therefore, every cashmere sweater requires gentle treatment – especially when washing.

 

🧼 Step-by-step: How to wash your cashmere sweater without ruining it

Washing cashmere doesn't have to be difficult – as long as you follow the right steps.

1. Prepare for washing

• Turn the sweater inside out

• Remove any stains with a mild stain remover for wool

• Use a fragrance-free, enzyme-free wool detergent (e.g., Y3 Wool & Cashmere)

👉 Tip: Avoid fabric softener entirely – it damages the fibers.

 

2. Hand wash in lukewarm water (max 30°C)

• Fill a clean sink or basin with lukewarm water

• Mix in the detergent – let the sweater soak for 10–15 minutes

• Press gently (do not rub or wring)

• Change water 2–3 times to rinse out all detergent

 

3. Squeeze out water – never wring

After washing:

• Place the sweater between two towels

• Roll it up and gently press out the water

• Never hang up the sweater – it will lose its shape

 

4. Dry flat on a towel

• Lay the sweater flat on a dry towel

• Gently reshape the sweater to its correct size

• Avoid direct sunlight and radiators

💡 Never tumble dry – not even on low heat!

 

5. Steam or brush after drying

To restore the sweater's softness:

• Use a garment steamer or cashmere comb

• Brush gently in the direction of the fibers

• Store the sweater folded, never on a hanger

 

❌ Common mistakes to avoid

Mistake	Consequence
Washing in a washing machine	Shrinkage, pilling, ruined shape
Wringing the sweater	Damaged fibers and deformation
Hanging a wet sweater	Loses its fit
Using regular detergent	Destroys natural fats
Tumble drying	Permanent damage to fibers

 

🧠 FAQ: Common questions about cashmere and washing

❓ Can you wash a cashmere sweater in a washing machine?

Yes, but only with a hand wash program, cold water, and in a laundry bag. Hand washing is always safer.

❓ How often should you wash cashmere sweaters?

As rarely as possible – air them out instead between uses.

❓ How do you remove pilling from cashmere?

Use a cashmere comb or a clothes brush. Avoid razors!

❓ Can you iron cashmere?

No – steam it with a steamer instead.

 

 

 

🧺 Bonus: Tips for long-term cashmere care

• Store the sweater in a cotton bag or fabric bag to protect against moths

• Place cedarwood blocks in the closet – natural protection

• Avoid perfume and deodorant directly on the fabric

• Fold – never hang