How to Wash Cashmere at Home Without Losing Its Softness

There is a quiet pleasure in reaching for the same cashmere sweater season after season, soft from wear and still holding its shape. The pieces we return to most are the ones that age well, and that comes down to how we care for them at home.

Knowing how to wash cashmere is a gentle skill, less about strict rules and more about a light touch. With cool water, a mild cleanser, and a little patience, the fiber stays soft, keeps its drape, and feels new far longer than most people expect.

Below, we share how we look after our own cashmere, from washing and drying to the small habits between wears. The methods are simple, and once they settle into a routine, they take only a few quiet minutes. There is nothing precious about the process, only a gentleness that the fiber returns in kind.

Why Gentle Cashmere Care Matters

Cashmere is a slow fiber, gathered by hand from goats raised in the cold of Mongolia and spun into a yarn that holds warmth without weight. A piece made this way is meant to last, and the way we care for it is part of that promise.

The good news is that good care is gentle care. The fabric dislikes heat, harsh detergents, and rough handling, and little else. Once those few things are understood, the rest is easy, and a considered knit like the Zermatt Cable Pullover stays in fine form through many winters. Treated well, a single sweater can move through a decade of cold mornings and feel softer for it.

How Often to Wash Cashmere

Cashmere asks for far less washing than most fabrics. The fiber is naturally resistant to dirt and odor, so it stays fresh through more wears than cotton or synthetics.

As a gentle rule, we wash a cashmere sweater every seven to ten wears, or at most twice across a season. Frequent washing tires the yarns, while airing a piece between outings keeps it clean and soft. The fabric responds well to fresh air, so a few hours by an open window often does more than a wash. When in doubt, we let the fiber guide us, cleaning a piece only when it truly needs it.

How to Hand Wash Cashmere

Hand washing is the kindest way to clean cashmere, and it takes only a basin and a few minutes. It is the method we reach for with our most treasured pieces. Before you begin, it is worth a glance at the care label, since some garments carry their own instructions.

Fill a clean sink or basin with cool or lukewarm water and add a small amount of a mild cleanser, such as baby shampoo or a dedicated cashmere wash. Submerge the garment, gently swirl it through the water, and let it soak for a few minutes. Work slowly and let the water do the lifting, rather than rubbing or scrubbing the knit. Regular detergents are best avoided, as they strip the natural oils that give the fiber its softness.

When the time is up, rinse with clean, cool water until it runs clear. Never wring the knit, since twisting distorts its shape. Press the water out gently instead, and move on to drying.

Can You Wash Cashmere in the Washing Machine

Cashmere can go in the machine, as long as the settings stay gentle. We treat the machine as a careful alternative to hand washing, not a shortcut that skips the care.

Place the garment in a mesh washing bag to protect it from snagging, then choose the delicate cycle with cold water. Cool water matters here, since high temperatures are what cause cashmere to shrink. Use the same mild cleanser you would by hand, and leave out the fabric softener, which coats the fiber and dulls its feel.

When the cycle ends, reshape the piece by hand and lay it out to dry. The machine handles the washing, but the drying still asks for a gentle touch.

How to Dry Cashmere

Drying is where shape is won or lost, and it rewards patience more than any other step. To dry cashmere well, lay the garment flat on a dry towel, roll the two together like a scroll, and press. This draws out the water without the stretching that wringing causes.

Then lay the piece flat on a fresh towel or a drying rack, easing it back into its original shape. Keep it away from direct sunlight and heat sources such as radiators, which fade color and harden the fiber. Hanging is best avoided too, as the weight of the water pulls a wet garment out of shape. Flat and slow is the way.

Caring for Cashmere Between Washes

Much of how to care for cashmere happens between washes, in the small habits that keep a piece looking considered. A little pilling is normal where the fabric rubs, and it is easily managed. We use a cashmere comb or a fabric shaver to lift away stray pills without catching the knit, and a lint roller takes care of dust between wears.

To refresh a piece, a handheld steamer relaxes the fiber far more kindly than an iron, which can crush the surface. And when a sweater simply needs reviving, fresh air often does the work, so an hour outside or near an open window can lift it. For the longer view, our full cashmere maintenance guide covers how to keep a piece in good form over the years.

Storing Cashmere With Care

How we store cashmere through the warmer months decides how it greets us next winter. Always fold the knit rather than hang it, since hangers stretch the shoulders out of shape. Keep folded pieces flat in a drawer or a breathable cotton bag, and avoid plastic bins, which trap moisture.

For longer storage, wash each piece first, as moths are drawn to the faint traces of skin and scent left behind. A few cedar balls or a lavender sachet tucked alongside helps keep them away, and keeps the fabric smelling fresh until you reach for it again. Cotton bags let the fiber breathe, which is part of what keeps a piece in good condition through months of rest.

Common Questions About Washing Cashmere

How Do You Wash 100% Cashmere?

The same gentle approach applies. Use cool water and a mild cleanser, wash by hand or on a delicate machine cycle, and dry the piece flat. Pure cashmere has no synthetic fibers to lend it resilience, so the soft handling matters more, not less.

Does 100% Cashmere Shrink?

It can, when met with heat and agitation. Hot water and a warm dryer cause the fiber to felt and tighten, which is what we see as shrinking. Cool water, a gentle cycle, and flat drying keep a piece true to its original shape.

Is Dawn Dish Soap Safe for Cashmere?

We would not recommend it. Dish soap is made to cut grease, and on cashmere it tends to strip the natural oils that keep the fiber soft. A mild baby shampoo or a dedicated cashmere wash is a far kinder choice.

Why Can a Cashmere Sweater Cost $2,000 or $30?

The difference lies in the fiber. Longer, finer hairs make a softer, stronger yarn that holds up for years, while shorter fibers pill quickly and thin with wear. Origin and grading matter too, which is part of why we source from Mongolia. If you are curious about the markers of quality, our guide on how to tell real cashmere apart goes deeper.

A Piece That Improves With Time

Cared for gently, cashmere becomes one of the few things in a wardrobe that improves with age. A little cool water, a flat surface, and a quiet drawer are most of what it asks. The reward is a piece that stays soft and keeps its shape for many winters to come. That is the heart of slow fashion, fewer pieces, chosen with care and kept for the long term.