A cashmere coat is one of the few garments that genuinely improves with age, provided it is handled correctly from the start. The fiber is soft precisely because it is fine: individual strands from the undercoat of Hircus goats, measuring between 14 and 19 microns in diameter. That fineness makes cashmere coat care non-negotiable. Rough handling, wrong temperatures, or a season stored without cedar will undo years of good wear.

What follows is not a list of obvious warnings. It is the actual sequence of decisions, materials, and habits that keep a fine wool coat looking right for twenty years rather than two. For readers who are still choosing their first piece, the companion guide on choosing your first cashmere coat covers what to look for before the care question arises.

Why Cashmere Demands a Different Approach Than Other Wool

Merino and Harris tweed tolerate a degree of roughness that cashmere does not. The individual fiber is finer, the weave typically lighter, and the surface more prone to pilling under friction. A mid-weight cashmere coat, usually woven at somewhere between 400 and 600 grams per linear meter, has very little structural redundancy. Each wrong wash chips away at that margin.

The most common mistake is treating cashmere like a regular winter coat: sent to the dry cleaner every few weeks, hung on a wire hanger in a plastic sheath, and stored in a garment bag from October to May without any moth protection. Each step in that sequence is wrong in a different way.

Dry cleaning uses perchloroethylene or hydrocarbon solvents that strip the natural lanolin from the fiber. Occasional dry cleaning is acceptable, perhaps once a year at the end of the season, but it should never be the primary cleaning method. Hand-washing with cool water and a small amount of wool-specific detergent, or baby shampoo at a pinch, is far gentler and preserves the loft of the fiber longer.

The Correct Way to Hand-Wash a Cashmere Coat

Fill a basin or clean bathtub with cool water, around 30°C or below. Add a teaspoon of wool wash, no more. Submerge the coat and press it gently with flat hands. No wringing, no scrubbing, no rubbing seam against seam.

Let it soak for ten minutes. Drain, then refill with clean cool water to rinse. Repeat the rinse once. Lift the coat out supporting the full weight with both arms beneath it, never by the collar or shoulders. Lay it flat on a dry towel, roll the towel to absorb water, then reshape the coat on a second dry towel and leave it horizontal to dry.

• Water temperature: cool, never warm or hot.
• Detergent: wool-specific or mild shampoo, no enzyme-based cleaners.
• Drying position: horizontal and flat, away from direct heat or sunlight.
• Drying time: allow 24 hours minimum; do not speed the process with a radiator.

Frequency matters as much as method. A cashmere coat worn over other garments, as most overcoats are, does not need washing after every outing. Brushing with a soft clothes brush after each wear removes surface debris and prevents the fiber matting that eventually becomes pilling. One or two washes per season is the practical ceiling for most wearers.

Those who prefer a machine cycle should confirm the machine has a dedicated wool or delicate setting that locks water temperature below 30°C and reduces drum agitation to a minimum. Many modern front-loaders qualify. A mesh laundry bag adds a further layer of protection by preventing the coat from catching on the drum. Even so, hand-washing remains the lower-risk method, particularly for tailored or structured pieces.

Pilling: How to Remove It Without Damaging the Fiber

Pilling is not a sign of low-quality cashmere. It happens to all grades of the fiber, particularly in the first season of wear as loose surface fibers work their way free. What distinguishes fine cashmere is that pilling stabilizes after the first year; cheaper blends continue to pill indefinitely.

Use a cashmere comb or a fabric depiller with a fine guard. Work in short, light strokes following the grain of the weave. Do not press hard. The goal is to gather the pills at the surface and sever them without pulling at the underlying yarn. A standard lint roller or tape does nothing for pills; it only addresses surface fluff.

Never use a razor blade on a coat-weight cashmere. The weave is too open and the risk of snagging a thread is real. A purpose-made comb costs little and lasts decades.

For ongoing prevention, the brushing habit mentioned above is the most effective tool available. A natural-bristle brush used consistently after each wear keeps loose surface fibers from entangling into pills in the first place. The depilling comb addresses what brushing does not catch. Both belong in the care kit of anyone who owns a piece worth keeping.

Cedar and Cashmere: The Science Behind Cashmere Moth Protection

Moths do not eat cashmere. The larvae of Tineola bisselliella, the common clothes moth, eat the keratin protein in the fiber. Cashmere, being among the finest animal fibers available, is particularly attractive to them. A single undetected moth infestation can render a coat unwearable in one season.

Cedar repels moths through the volatile oils it releases, specifically cedrene and thujopsene. These compounds irritate the moth's sensory system and discourage egg-laying in the vicinity. The critical point is that cedar for cashmere storage works only while those oils remain active. After roughly twelve months, the surface of a cedar block oxidizes and the repellent effect diminishes significantly.

To restore the repellent effect, sand the surface of cedar blocks lightly with fine-grain sandpaper. This exposes a fresh layer of wood and re-releases the volatile oils. Replace blocks entirely every three to four years. Cedar rings, balls, and planks all follow the same principle; the shape matters less than the freshness of the surface and the proximity to the garment.

Place cedar directly in contact with or immediately adjacent to the stored coat. A block sitting on a shelf across a wardrobe provides almost no protection. The concentration of cedrene in the local air around the garment needs to be high enough to deter egg-laying.

What Cedar Cannot Do Alone

Cedar deters moths that are choosing where to lay eggs. It does not kill existing larvae or eggs already present on a garment. If a coat is stored in autumn without inspection and a moth has already laid eggs in the fiber, cedar in the storage bag will not prevent damage.

Before storing any cashmere piece at the end of the season, the garment should be clean. Moth larvae are attracted to the organic residues in worn, unwashed fiber: body oils, food particles, perspiration. A coat stored dirty is a coat stored with bait. Wash or dry-clean before putting away, every year without exception.

For additional protection, lavender sachets placed alongside cedar provide a complementary aromatic deterrent. Some conservators also recommend airtight storage in sealed cotton or linen bags for pieces worn infrequently, as the lack of airflow prevents moth access entirely. Airtight plastic containers are effective against moths but risk trapping residual moisture, which creates a different problem: mold. Cotton is the right material for fine knitwear storage.

One further precaution worth adopting: before placing the coat in storage, hold it up to a strong light source and inspect the lining carefully, particularly around the hem and under the arms. Moth eggs are small but visible as pale clusters. Catching an infestation before storage prevents it from spreading to neighboring garments across the off-season. Any piece showing active damage should be isolated in a sealed bag and treated with a freeze cycle, 72 hours in a household freezer kills eggs and larvae without chemicals or heat.

How to Store Cashmere Coats: Folding vs. Hanging

The instinct is to hang a coat. It looks right, it stays pressed, and it takes up less floor space. For most structured outerwear in wool or tweed, hanging on a broad wooden hanger is correct. For cashmere, the calculation changes.

Cashmere coat-weight fabric, even at heavier constructions, will stretch under its own weight over months of hanging. The shoulder seam migrates, the body lengthens slightly, and the silhouette loses its tailored line. This is particularly visible on double-breasted cuts and on coats with structured shoulders.

For in-season storage between wearings, a wide wooden hanger with a shoulder width close to the coat's own shoulder measurement is acceptable. The cedar hanger serves double duty here: it supports the shape and releases repellent oils into the wardrobe space simultaneously. When the season ends, fold.

To fold without creating permanent creases, lay the coat face-down on a flat surface. Fold one side to the center, then the other. Fold the bottom hem up once. Place in a breathable cotton or linen garment bag with a cedar block inside, and store flat in a drawer, cedar chest, or on a shelf. Never compress under other items.

Humidity, Light, and the Wardrobe Environment

Moths aside, the two environmental factors most damaging to stored cashmere are excess humidity and ultraviolet light. Humidity above 60% creates conditions favorable to mold and mildew growth in the fiber, which appears as small gray or white patches and produces a musty odor that is almost impossible to remove completely.

Store cashmere away from exterior walls in climates with cold winters, where condensation is a risk. A cedar-lined drawer or a cotton-lined wooden chest in an interior room is preferable to a wardrobe against an uninsulated wall. A small silica gel packet inside the storage bag provides additional moisture control, particularly in humid climates.

Direct sunlight fades fiber color and weakens the protein structure over time. Ivory and cream cashmere yellows noticeably after prolonged light exposure. Charcoal and navy fade unevenly. Even diffuse light through a wardrobe door with frosted glass will cause gradual change. Store away from windows, or use opaque cotton bags that block light entirely.

Reviving a Cashmere Coat After Storage

After months folded in a drawer, a cashmere coat will emerge with fold lines and a slightly flattened surface. Neither is permanent. Hang the coat in a steam-filled bathroom for twenty minutes, or use a handheld garment steamer held several centimeters from the surface, never touching. Steam relaxes the fiber and the fold lines release within hours.

Do not iron cashmere directly. If pressing is necessary, use a pressing cloth between the iron and the fabric, set to wool temperature, and work with minimal pressure. The goal is to coax the fiber flat, not flatten it entirely. A certain natural loft is what distinguishes fine cashmere from flat woven fabric.

After steaming, brush gently with a soft clothes brush to restore the nap. If the coat has been stored for more than six months, check the cedar in the bag and replace or sand it before the next storage cycle. A brief inspection of the lining and seams at this stage catches any issues before they worsen through a full season of wear.

If steaming reveals a small snag or a pulled thread, address it before wearing. A snag left under tension across a full season of movement will become a hole. Use a blunt tapestry needle to work the pulled yarn back through to the wrong side of the fabric, then ease the surrounding weave back into shape with fingertip pressure. More significant repairs, worn elbows, thinning at the cuffs, fraying at a buttonhole, benefit from a professional reweaver. The guide on how to repair cashmere covers those options in detail.

"A garment is only as good as the care it receives between wearings."

Traditional principle in English tailoring

The Annual Routine That Protects a Coat Across Decades

The habits that preserve cashmere coat care and storage across the long term are not complicated. They require attention twice a year: once at the start of the cold season, and once at the end. Everything else is maintenance at the margin.

At season's end, wash the coat by hand, allow it to dry fully flat, brush it carefully, depill if necessary, and fold it into a clean cotton garment bag with two fresh or freshly-sanded cedar blocks. Record the date on a small tag inside the bag if you store multiple pieces. Store flat, away from light and exterior walls.

At season's start, steam the coat to release fold lines, brush to restore nap, inspect for any moth activity or mildew, and check that cedar is active. Replace cedar if it has been more than twelve months since the last refresh.

That sequence, repeated without shortcuts, keeps a well-made cashmere coat in wearable condition for thirty years or more. The cost of the cedar, the cotton bag, and the occasional bottle of wool wash is negligible against the cost of the coat. The investment in care is the investment in the garment itself. Pieces from the outerwear collection and finer knit layers follow the same logic: the care routine is part of what it means to own them properly.

Frequently Asked Questions

How often should a cashmere coat be washed?+

Once or twice per season is sufficient for a coat worn over other garments. Brush after each wear to remove surface debris and delay the need to wash. Dry cleaning, if used at all, should be reserved for end-of-season cleaning rather than regular maintenance.

Can you wash a cashmere coat at home?+

Yes, hand-washing at home is the preferred method for most cashmere coats. Use cool water below 30°C, a small amount of wool-specific detergent or mild shampoo, and handle the fabric with flat-handed pressure rather than wringing or scrubbing. Dry flat on a towel, away from heat. Machine washing on a dedicated wool or delicate cycle is possible for less structured pieces, provided water temperature is controlled and agitation is minimal. A mesh laundry bag reduces mechanical stress during the cycle.

Do cedar blocks actually stop moths?+

Cedar deters moths by releasing volatile oils that irritate their sensory system and discourage egg-laying. It does not kill existing eggs or larvae. Fresh cedar placed in close proximity to the garment provides meaningful protection; old, unrefreshed cedar does not. Sand blocks annually to restore the effect, and replace them entirely every three to four years.

Should a cashmere coat be hung or folded for storage?+

Hanging on a wide wooden hanger is acceptable during the active season for short periods. For off-season storage lasting months, fold the coat flat and store in a cotton garment bag. Hanging cashmere under its own weight over a full season causes gradual shoulder stretch and silhouette distortion.

What type of bag is best for storing a cashmere coat?+

Breathable cotton or linen bags. Plastic garment bags trap moisture, which creates conditions for mold. Cotton allows the fiber to breathe while still protecting it from light, dust, and incidental contact with moths.

How do I remove pilling from a cashmere coat without damaging it?+

Use a cashmere comb or a fabric depiller with a fine guard. Work in short, light strokes following the grain of the weave. Avoid razor blades on coat-weight cashmere, as the open weave makes snagging a real risk. Pilling is normal in the first season and typically stabilizes after the fiber has settled.

How do I protect cashmere from moths without using chemicals?+

The most reliable chemical-free approach combines three measures: store clean garments only, since moth larvae target body oils and food residues in worn fiber; use fresh cedar blocks placed in direct proximity to the piece; and add lavender sachets as a secondary deterrent. For pieces stored more than six months, a sealed cotton bag with active cedar provides very strong protection. A freeze cycle, 72 hours at household freezer temperatures, kills any eggs or larvae already present without chemicals, heat, or dry-cleaning solvents.