# How to Wash Cashmere Without Ruining It > Hand washing is safest for cashmere: cool water, an enzyme-free wool wash, never wring. Some pieces machine-wash on a cold wool cycle if the label allows. **Published :** 2026-06-04 ยท **Updated :** 2026-06-05 --- **Summary:** **Hand wash cashmere by default:** cool-to-lukewarm water, enzyme-free wool/cashmere wash, press instead of wringing, then dry flat. Machine wash only if the label allows it, on a cold wool cycle in a mesh bag at the lowest spin. Dry-clean structured, lined or no-water pieces. Cashmere's softness comes from very fine, short fibres, and that's also its weakness: heat, water and agitation make the fibre scales lock together and the garment felts. Felting can't be undone, so the whole method is about keeping it cool and still. Cashmere is the fine, soft undercoat of cashmere goats โ€” a delicate protein fibre that needs lower-friction handling than everyday cotton or synthetics. Get it hot, or rub and wring it, and the fibre scales interlock and the garment **felts**: it shrinks, thickens and stiffens, and [Woolmark](https://www.woolmark.com/industry/use-wool/processing-innovations/machine-washable-wool/) describes that felting as irreversible. The good news is that washing cashmere well is genuinely simple โ€” it's mostly about what *not* to do. ## What you'll need Cashmere needs very little, and gentleness over everything. The mistakes that do the most damage are heat, agitation and wringing. - ๐Ÿท๏ธ - **The care label** โ€” the washtub number is the max temperature; a hand symbol means hand wash; a crossed-out tub means no water washing - ๐Ÿงด - **An enzyme-free wool/cashmere wash** โ€” avoid ordinary bio detergents - ๐ŸŒก๏ธ - **Cool-to-lukewarm water** โ€” around body temperature, never above the label maximum - ๐Ÿงบ - **A fine-mesh laundry bag** โ€” only if you machine wash - ๐Ÿ› - **A clean, dry bath towel** โ€” to press out water and dry flat A dedicated wool and cashmere wash should be enzyme-free, which is what this protein-fibre routine is built around. **Recommended product** ## Hand wash or machine wash? Hand washing is the safe default; machine washing is a conditional compromise, never an equal. Use this to decide: | If the label or garment says... | Best route | Why | Stop rule | | ------------------------------------------------------------- | ----------------------------- | ------------------------------------------------ | -------------------------- | | Plain cashmere knit, water washing allowed | Hand wash | Lowest friction and easiest temperature control | Do not rub, wring or twist | | Machine-wash symbol or explicit machine-wash wording | Cold wool cycle in a mesh bag | Acceptable compromise for sturdier knits | Lowest spin only; dry flat | | Hand-in-tub symbol | Hand wash only | The label allows water but not machine agitation | No machine cycle | | Crossed-out washtub, tailored coat, lining or heavy structure | Dry clean | Water can distort construction, lining and trims | Do not test-wash at home | | Already shrunk, thickened or felted | Damage limitation only | Felting locks the fibre scales together | Do not promise restoration | That last row matters. A sweater that is only a little misshapen can sometimes be re-blocked while damp; a sweater that has become dense, stiff and much smaller has felted. At that point, more soaking, conditioner hacks or stretching usually damage the knit further. Stop, reshape what you can, and treat it as a lesson in prevention rather than a recoverable wash error. Before the first wash, take a quick photo or measure the chest width and sleeve length. Those reference points make reshaping much less guessy when the sweater is wet and heavy. ## Before you wash: decide if it really needs water Cashmere wears best when you wash it only when it needs it. Before filling the basin, run a quick triage: - **Smell only, no visible soil** โ€” air it flat for a day. Body odour often disperses without washing, especially if the sweater was worn over a base layer. - **One small food or oil mark** โ€” spot-clean the mark instead of soaking the whole garment. Test a hidden seam, use a tiny amount of fibre-safe detergent, and press with a cloth rather than rubbing. - **Moth-risk storage** โ€” wash or dry clean before long storage if there are body oils, food traces or perfume on the garment. Clean, fully dry storage is the safer baseline for knitwear. - **Dye bleeding in a test** โ€” stop. If a damp white cloth picks up colour from a hidden seam, a home basin wash becomes risky; it can create a pale bloom or water mark across the whole garment. - **Structure, lining, shoulder pads, embroidery or heavy trims** โ€” dry clean. The knit may survive the water, but the construction can distort. This is not caution for its own sake. A cashmere sweater is easy to refresh but hard to repair: once the shape stretches, pills are shaved too aggressively, or the fibre felts, the fix is limited. The best cashmere care is often restraint: air, brush, spot-clean, then wash only when the whole garment actually needs it. ## Cashmere pieces you should not home-wash The word "cashmere" is not enough to decide the method. Construction matters as much as fibre: - **Tailored cashmere coats and blazers** rely on canvas, padding, lining and pressed seams. Water can ripple the internal structure even if the outer fibre survives. - **Cashmere with leather, suede, beads, embroidery or glued trims** should be treated as a mixed-material garment. The most delicate trim sets the limit, not the knit panel. - **Very loose, open or heavy knits** stretch under their own wet weight. If you cannot support the whole garment flat while lifting and drying it, do not soak it in a basin. - **Vintage, heirloom or expensive pieces with uncertain labels** deserve a professional first clean. The risk is not just shrinkage; old dyes, weak seams and repairs can fail in water. For these pieces, the best home care is airing, brushing, careful spot-cleaning and clean storage. If the care label forbids water washing, treat that as the decision, not a suggestion to outsmart. ## How to hand wash cashmere, step by step ### 1. Read the care label first The **washtub symbol's number** is the maximum temperature; a **hand** in the tub means hand wash only; a **crossed-out tub** means don't wash it with water at all (dry clean only). Decide hand versus machine here, and never exceed the label's temperature. ### 2. Turn it inside out and make a cool bath Fill a basin with **cool-to-lukewarm water โ€” around body temperature** โ€” and dissolve a little wool or cashmere wash before the garment goes in. Makers disagree on the exact degree ([Johnstons of Elgin](https://discover.johnstonsofelgin.com/our-story/how-to-care-for-your-fine-fibres) suggests about 35 ยฐC; [N.Peal](https://www.npeal.com/blogs/stories/how-to-wash-cashmere) says cold), which is why the safe rule is "lukewarm, and never hotter than the label allows," not a fixed number. ### 3. Submerge and gently press โ€” never rub Submerge the sweater and gently swish or press the suds through it. **Soak only briefly** โ€” up to about 30 minutes, depending on maker guidance (N.Peal; The Laundress). Never rub, wring or twist: that friction is exactly what felts the fibres and pulls the garment out of shape. ### 4. Rinse in cool water until it runs clear Rinse in water the **same temperature** as the wash โ€” a sudden change of temperature is part of what felts wool โ€” and keep going until the water runs clear. Don't leave it sitting in detergent. ### 5. Press the water out in a towel Lift the sweater out **supporting its full weight** (a wet sweater held up by the shoulders stretches), lay it on a clean dry towel, roll the towel up and press. **Never wring.** ### 6. Dry flat and reshape Lay the sweater **flat on a fresh dry towel and pat it back to its original measurements**, away from sun and radiators. Never hang it wet โ€” the weight of the water stretches it โ€” and never tumble-dry it, whose heat felts and shrinks it. ### 7. The machine-wash route โ€” only if the label allows If the care label permits machine washing, turn the garment **inside out**, put it in a **fine-mesh bag**, and run a **cold wool, delicate or hand-wash cycle at the lowest spin** ([The Laundress](https://www.thelaundress.com/blogs/tips/clean-and-preserve-precious-wool-cashmere-at-home)). Then dry flat as above. It's an acceptable compromise where the label allows it โ€” but hand washing is still gentler, and N.Peal calls the machine "possible but not the best method." A fine-mesh wash bag is essential for the machine route โ€” it's the barrier that keeps the agitation off the knit. ### 8. De-pill and finish Cashmere pills naturally because its fibres are short and fine โ€” it isn't a sign of poor quality. Once the sweater is **fully dry**, lift the pills gently with a cashmere comb or fabric shaver in light strokes (the full technique is in [how to remove pilling from clothes](/blog/remove-pilling-from-clothes/index.md)), and use **steam โ€” not a hot iron pressed flat** โ€” to revive the pile. ## Does cashmere shrink โ€” and can you rescue it? Yes: heat, agitation and friction make the fibre scales lock together, and the garment felts and shrinks. Because that felting is irreversible, a badly shrunk piece usually can't be saved. > With a **very mildly** felted sweater you can sometimes recover a little shape > by gently reshaping and re-blocking it flat to its original measurements while > it is still damp, then letting it dry that way. Treat this as > damage-limitation only โ€” it won't restore a heavily felted or badly shrunk > garment. The real fix is prevention: keep cashmere cool and still. ## Washing cashmere: the honest details > Don't trust a single magic temperature โ€” even the makers differ (Johnstons > says about 35 ยฐC, N.Peal says cold). Anchor to lukewarm, around body > temperature, and to your garment's care-label maximum. When in doubt, cooler > is safer. > The Laundress recommends an enzyme-free wash for wool and cashmere. Avoid > ordinary "bio" or enzyme-containing detergents, which are made for sturdier > fabrics, not fine protein fibres. Skip fabric softener too โ€” it coats the > fibres rather than conditioning them. > Clean and fully dry cashmere before long storage, and fold it (never hang). > Johnstons of Elgin recommends cedar for storage; treat it as one helpful layer, > not a guarantee. A breathable cotton bag in a cool, dry drawer is a practical > storage setup. For a few light stains between washes, spot-treat rather than washing the whole garment โ€” match the stain type and treat gently: [grease and oil](/blog/remove-grease-oil-stains/index.md), [sweat and deodorant marks](/blog/remove-sweat-yellow-armpit-stains/index.md), or [red wine](/blog/remove-red-wine-stains/index.md). Always test on a hidden seam first, and keep protein stains in cool water. > **Warning:** > - Felting is irreversible. The combination of heat, moisture and agitation makes cashmere's fibre scales lock together (Woolmark) โ€” once a garment has badly felted or shrunk it cannot be restored. Never use hot water, never tumble-dry, and never wring. > - Never use chlorine bleach on cashmere. And never mix chlorine bleach with vinegar or ammonia (for example in a stain remedy): together, especially with heat, they release toxic chlorine and chloramine gases that injure the lungs (CDC). > - Don't hang cashmere โ€” wet or dry. A wet sweater stretches under its own weight, and hanging a dry one distorts the shoulders. Fold it to dry and to store. > - Skip fabric softener and ordinary bio/enzyme-containing detergents; they are made for sturdier fabrics, not fine protein fibres like cashmere. ## The honest bottom line Cashmere isn't fragile so much as **unforgiving of heat and friction.** Hand wash it cool, press the water out, and dry it flat and reshaped, and a good cashmere sweater stays soft and in shape for many years. Machine wash it only where the label allows, in a mesh bag on a cold wool cycle โ€” and never, ever put it in the dryer. For the general wool and knitwear method this builds on, see [how to wash a wool sweater without shrinking it](/blog/wash-wool-sweater-without-shrinking/index.md); for the wash-temperature framework behind "keep it cool," the [laundry temperature guide](/blog/laundry-temperature-guide/index.md); and for dosing a hand-wash basin, [how much laundry detergent to use](/blog/how-much-laundry-detergent-to-use/index.md). For another delicate protein fibre, [how to wash silk without ruining it](/blog/wash-silk-without-ruining-it/index.md).