How to Wash Cashmere Sweaters & Delicate Knits at Home

Cashmere is luxurious, but washing it can be intimidating. The reassuring news is that you can safely wash many cashmere jumpers at home, provided you follow the care label, use a gentle detergent and treat the fabric carefully. Cashmere is so delightfully soft because its fine fibres make for a lightweight, insulating fabric. The wrong combination of heat, moisture and agitation can felt, shrink or misshape the same fibres.

So, can you wash cashmere at home without ruining it? Usually, yes, if the care label allows it. These cashmere care tips will show you when to hand wash, when a washing machine is safe and when the best thing you can do for your favourite jumper is leave the cleaning to a professional.

Can You Wash Cashmere at Home?

Yes, many cashmere garments can be washed at home. The care label should always make the final decision. If the label says hand wash, follow that instruction rather than putting the garment through a standard washing cycle. If it allows machine washing, use the wool or delicate programme stated on the label. If it says dry clean only, do not experiment with a sink full of water because an online guide said it would probably be fine.

The Woolmark Company recommends checking garment care instructions before washing wool products. Its hand-washing guidance uses water at approximately 30°C and advises against rubbing, pulling or wringing wool garments.

The Laundryheap Label-First Check

Before washing any delicate knit, ask three questions:

1. What does the care label permit?
2. Is the garment stained, embellished, structured or already misshapen?
3. Am I confident I can wash and dry it exactly as instructed?

If the answer to the third question is no, professional cleaning is the lower-risk option. Take a photo of the care label when you buy an expensive jumper. Labels fade, itch and occasionally get cut out. Your phone is less likely to disappear in the wash.

How to Wash Cashmere by Hand Step by Step

Hand washing gives you more control over water temperature and movement, which can make it a good option when the care label recommends it.

Start by checking the care label for the correct washing method and temperature. Fill a clean basin with cool or lukewarm water. Woolmark guidance for hand-washable wool recommends water at around 30°C.

Add a small amount of mild, neutral detergent made for wool or delicate garments. Turn the cashmere jumper inside out, then lower it gently into the water.

Leave the garment to soak without rubbing, scrubbing or stretching it. Woolmark guidance suggests soaking hand-washable wool for around 10 minutes. Gently move the jumper through the water so the detergent can work through the fibres.

Once it has soaked, rinse the garment thoroughly according to the detergent and care-label instructions. Avoid twisting or wringing the fabric, as this can pull the knit out of shape.

To remove excess water, press the jumper gently rather than squeezing it. Wet cashmere becomes heavier and easier to stretch, so support the whole garment when lifting it from the basin instead of holding it by the shoulders or sleeves.

What Detergent Should You Use for Cashmere?

Choose a mild, neutral detergent intended for wool or delicate fibres. More cleaning power is not better when you are dealing with cashmere.

The Woolmark Company recommends mild wool detergents and advises against heavy-duty detergents, bleach and biological detergents containing enzymes when washing wool. It also advises following the detergent manufacturer’s dosage instructions.

Product	Use on cashmere?	Why	What to do
Mild wool detergent	Yes, if label allows	Designed for delicate wool fibres	Follow product dosage
Heavy-duty detergent	Avoid	Too aggressive for wool care	Choose a mild alternative
Biological detergent	Avoid	May contain enzymes unsuitable for wool	Check the ingredients
Bleach	No	Can damage wool fibres	Do not use

You also do not need to compensate by pouring in extra wool wash. Too much detergent makes rinsing harder and can leave residue behind.

One more common shortcut deserves retiring: baby shampoo is not automatically a suitable cashmere detergent. A dedicated wool wash provides clearer instructions for laundering wool fibres.

Can You Wash Cashmere in a Washing Machine?

Sometimes. The care label must specifically permit machine washing. If it does, select the wool cycle or the gentle programme specified by the manufacturer. Woolmark notes that machine-washable wool should use an appropriate wool programme, while its care-symbol guidance describes very mild 30°C or 40°C programmes with reduced mechanical action for garments carrying those instructions.

Do not take the existence of a wool button on your washing machine as permission to ignore a hand-wash-only label. The machine setting and the garment instructions both matter.

Mechanical agitation is particularly relevant to wool fibres. Research into washing wool identifies how fibres move and felt as important causes of dimensional change, while a 2024 textile reference describes mechanical agitation as a key factor in irreversible felting shrinkage. When in doubt between a normal delicate cycle and a clearly labelled wool cycle, follow the garment label and your machine manual rather than guessing which programme sounds gentler.

How Should You Dry Cashmere Without Stretching It?

Dry cashmere flat unless the garment’s care label explicitly tells you otherwise.

After washing, place the jumper on a clean, dry towel. Gently arrange it into its normal shape, paying attention to the shoulders, hem, sleeves and neckline. You can roll the towel with the garment inside and press lightly to remove additional moisture before laying the knit flat to finish drying.

Avoid hanging a wet cashmere jumper from a clothes hanger. The weight of the water can pull the knit downwards and distort its shape.

Do not automatically put cashmere in a tumble dryer either. Woolmark recommends flat drying hand-washable and machine-washable wool sweaters, with tumble drying reserved for garments specifically labelled as suitable for it.

Keep the drying jumper away from direct heat. A radiator might look like a tempting shortcut when the British weather has turned your home into one enormous drying rack, but faster is not the goal here. Keeping the original shape is.

What Are the Biggest Cashmere Washing Mistakes?

Most cashmere washing disasters come from a handful of avoidable mistakes. One of the biggest is ignoring the care label. The fibre content alone does not tell you how a finished garment should be cleaned, because its construction, dyes, trims and treatments can all affect the safest washing method.

Using a normal washing programme can also cause problems. A cycle that works well for cotton T-shirts may use far more agitation than a delicate knit can handle. Scrubbing stains is another common mistake. Friction can disturb delicate fibres, so it is better to blot spills and use a stain-removal method suited to cashmere. Laundryheap’s guide to removing stains from cashmere covers this in more detail.

You should also avoid wringing a wet jumper. Twisting knitwear can pull it out of shape, so press out excess water gently instead. Hanging cashmere while it is still wet can stretch the garment under its own weight. Lay it flat to dry unless the care label says otherwise.

The wrong detergent can be just as damaging. Do not assume that your usual biological or heavy-duty detergent is suitable for wool or cashmere. Finally, avoid washing cashmere more often than necessary. Airing the garment and dealing with small marks between washes can sometimes keep it fresh without putting the fibres through another full wash.

When Should You Have Cashmere Professionally Cleaned?

Professional cleaning makes sense when the care label says dry clean only, when you are dealing with a difficult stain or when the garment contains details that make home washing risky.

A structured cashmere coat, lined garment or knit with embellishments is not the same cleaning job as a plain cashmere jumper. The care instructions for the finished garment matter more than a generic rule for the fibre itself.

You may also decide the risk is not worth taking with a particularly valuable or sentimental piece. That is not admitting defeat. It is garment care.

Laundryheap offers professional dry cleaning for delicate items, with doorstep collection and delivery. Check the live service and pricing pages for availability and the correct service for your garment. Would rather skip the delicate-wash logistics? Laundryheap can collect your laundry and dry cleaning from your door, clean it professionally, and return it to you. Check laundryheap.com to find laundry near you.

Cashmere Care Tips Between Washes

Good cashmere care happens between washes as much as during them. Give a jumper time to air after wearing it rather than putting it straight back into a packed wardrobe. Before storing it for longer periods, make sure it is clean and completely dry.

Fold cashmere instead of leaving heavier knits hanging for weeks or months. A flat fold reduces the chance of the shoulders stretching around the hanger. Pilling, also called bobbling, can happen as loose fibres work towards the surface through wear and friction. If your jumper develops pills, lay it flat and use a tool designed for delicate knitwear with a light hand. Do not attack it with whatever razor happens to be in the bathroom. For more general storage, pilling and everyday maintenance advice, see Laundryheap’s existing guide on how to care for cashmere and our guide to caring for knitwear.

How to Keep Cashmere Looking Its Best

Good cashmere care comes down to a few simple habits. Always check the care label first, use a mild detergent designed for wool, handle the garment gently and avoid wringing or stretching it while wet.

If machine washing is allowed, use the programme and temperature stated on the label. Otherwise, hand wash carefully and dry the jumper flat to help it keep its shape.

For dry-clean-only pieces, difficult stains or cashmere you would rather not risk at home, professional cleaning is often the safer option. If you would rather leave the delicate work to someone else, Laundryheap can collect your cashmere and dry cleaning from your door, have it professionally cleaned and return it to you.