How to Care for Cashmere Without Ruining It

A good cashmere jumper can make a grey London morning feel considerably more put together. It is also one of the easiest garments to damage with a rushed wash, a hot radiator or an overfilled wardrobe. Knowing how to care for cashmere means treating the fibres gently from the moment you wear it, not only when it needs cleaning.

Cashmere is soft because its fibres are exceptionally fine. That is what gives it warmth without bulk, but it also means friction, heat and harsh detergent can cause shrinking, matting and bobbling. The right routine is straightforward: wear it thoughtfully, wash it less often, dry it flat and store it properly.

How to care for cashmere between washes

Cashmere does not need washing after every wear. In fact, frequent washing is one of the quickest ways to shorten its life. Unless you have spilled something or worn the garment directly against your skin on a warm day, airing it out is usually enough.

Lay it flat on a clean chair or drying rack for a few hours, away from direct sunlight and strong heat. This allows moisture and odours to disperse without stretching the shoulders. Give the knitwear a rest between wears where possible. Rotating two or three favourite pieces reduces friction and helps each garment return to its natural shape.

Avoid spraying perfume, hairspray or deodorant directly onto cashmere. These products can leave marks and may make the fibres feel stiff. Put jewellery on after you are dressed too, particularly rings, watches and necklaces that can snag a fine knit.

Pilling is normal, especially on the underarms, sides and areas that rub against a coat or handbag strap. It is not necessarily a sign of poor quality. Remove loose pills carefully with a cashmere comb or fabric shaver, using light passes on a clean, dry garment. Do not pull bobbles off by hand, as this can loosen longer fibres and create a more noticeable snag.

Check the care label before you wash

The care label is the first instruction to follow. Some cashmere pieces are labelled hand wash, while others are marked dry clean only because of their construction, dyes, trims or lining. A fine, simple jumper can often be washed at home; a tailored cashmere coat, embellished cardigan or structured garment is better left to specialist cleaning.

If you are unsure, test your plan on a discreet area or choose professional care. The cost of getting it right is generally far lower than replacing a shrunken or misshapen favourite.

Hand washing is usually the safest home option

Use a clean basin or sink filled with cool water. Add a small amount of detergent made for wool, delicates or cashmere. Ordinary biological detergent, bleach and fabric softener are poor choices: they can strip the natural softness from the fibres or leave a coating that affects the handle of the knit.

Turn the item inside out and place it in the water. Gently press it beneath the surface and let it soak for around five to ten minutes. Do not rub, scrub or twist it. Cashmere becomes more vulnerable when wet, and agitation can lead to felting – the fibres locking together into a denser, rougher fabric.

Drain the soapy water, then rinse with cool water of a similar temperature until it runs clear. Sudden changes from warm to cold water can stress natural fibres, so keep the temperature consistent. Press the water out gently in the basin. Never wring the garment.

Can cashmere go in the washing machine?

It depends on the label and the machine. A modern machine with a genuine wool or hand-wash cycle may be suitable for sturdy, machine-washable cashmere, but hand washing remains the lower-risk option. If you use a machine, turn the item inside out, place it in a mesh laundry bag and wash it separately or with other soft knitwear only.

Choose a cold wool cycle, low spin and wool detergent. Keep the load small so the garment is not compressed against heavier fabrics. Never wash cashmere with towels, jeans, items with zips or anything that sheds lint. A short cycle does not remove the risk entirely, so reserve machine washing for pieces whose labels expressly allow it.

Dry cashmere flat, never on a radiator

The drying stage has as much influence on the final result as washing. Lift wet cashmere with both hands, supporting its weight, then place it flat on a clean, dry towel. Roll the towel loosely with the garment inside and press gently to absorb excess moisture. You may need a second towel for a thicker knit.

Next, lay the jumper flat on a fresh towel or mesh drying rack. Ease it back into its original measurements, straightening the sleeves, neckline and hem. This is known as reshaping, and it prevents the garment from drying twisted or narrow.

Keep it away from radiators, tumble dryers, heated airers and direct sun. High heat can shrink cashmere, fade colour and leave it feeling brittle. Hanging a wet jumper from a hanger is equally risky because the weight of water stretches the shoulders and body. Allow it to dry naturally, turning it once if needed to help both sides dry evenly.

Deal with stains quickly, but do not panic

Blot a fresh stain immediately with a clean white cloth or kitchen paper. Work from the outside towards the centre so it does not spread. Do not rub, as this pushes the stain further into the fibres and can raise the surface of the knit.

For a small water-based mark, such as tea or food, dab very sparingly with cool water and a trace of wool detergent, then rinse the area by dabbing with clean water. Let it dry flat. Oil, lipstick, red wine, ink and make-up are more difficult. Home remedies found online can bleach colour or set a stain, particularly if they involve hot water, bicarbonate of soda or vigorous rubbing.

When the garment is pale, delicate, expensive or sentimentally valuable, professional cleaning is the sensible choice. Tell the cleaner what caused the stain and whether you have already treated it. That information helps them select the safest process.

Store cashmere where moths cannot reach it

Always store cashmere clean. Moths are attracted to natural fibres, particularly where there are traces of skin oils, food or fragrance. Folding is better than hanging, which can stretch the shoulders over time.

For seasonal storage, fold each item loosely and place it in a breathable cotton bag or a clean lidded storage box. Avoid compressing cashmere in vacuum bags for months at a time, as prolonged pressure can flatten the fibres and create hard-to-remove creases. Add cedar blocks or lavender sachets if you like their scent, but remember that they are a deterrent, not a guarantee. Check stored knitwear periodically for any signs of moth activity.

Keep the wardrobe clean and dry, and avoid storing cashmere in a damp loft, garage or cellar. Humidity encourages mildew, while heat and sunlight can affect colour. If you notice small holes, webbing or powdery debris, isolate the affected items and arrange specialist advice promptly.

When professional cashmere cleaning makes sense

Home washing works well for many everyday jumpers, but it is not always the best route. Professional care is worth considering for cashmere coats, large wraps, delicate blends, garments with silk linings, deep-set stains and pieces that have lost their shape. It is also useful when your schedule leaves little room for slow, flat drying.

A specialist service can assess the fibre, construction and stain before selecting an appropriate method. At Hamlet Laundry, doorstep collection and delivery makes it easier to give delicate garments proper attention without adding another errand to your week. For valuable knitwear, ask for the item to be treated as a delicate and point out any stain, snag or area of concern at collection.

The best cashmere care is calm rather than complicated: fewer washes, cooler water, no friction and enough time to dry flat. Give each piece that level of care and it will stay soft, shaped and ready for years of wear.