There’s a moment of quiet panic that hits when you spill coffee on your favorite cashmere sweater. Or when you pull it from the wash and it feels… different. Stiffer. Smaller. Less like the cloud-soft garment you paid good money for. Cashmere has a reputation for being high-maintenance, and honestly, it’s not entirely undeserved. But here’s the thing, caring for cashmere doesn’t have to be complicated. You just need to know what you’re doing.
The best way to wash cashmere is by hand, in cool water, with a gentle detergent. That’s the short answer. But there’s a lot more to it than that, especially if you want your cashmere pieces to last years instead of seasons. Whether you’re dealing with a delicate pullover, a cozy scarf, or a cashmere jumper you wear on repeat, this guide walks you through everything, from washing and drying to stain removal, storage, and knowing when it’s time to call in a professional.
Why Cashmere Requires Special Care
Cashmere isn’t just another wool. It comes from the fine undercoat of cashmere goats, and the fibers are remarkably thin, typically between 14 and 19 microns in diameter, compared to about 36 microns for standard sheep’s wool. That’s what gives cashmere its signature softness and lightweight warmth. But that fineness is also what makes it vulnerable.
Unlike sturdier fabrics that can handle a rough spin cycle or a blast of hot air, cashmere fibers are prone to stretching, shrinking, felting, and pilling when they’re exposed to the wrong conditions. Understanding what sets cashmere apart, and what can go wrong, is the first step toward keeping your knits in pristine shape.
What Makes Cashmere Different From Other Fabrics
Cashmere is ultra-soft, lightweight, and surprisingly absorbent. It breathes well, regulates temperature naturally, and drapes beautifully. But those qualities come with trade-offs. The fibers are fragile. They don’t respond well to friction, excessive heat, or harsh chemicals.
Compare that to synthetic fabrics or even standard merino wool, which can tolerate more agitation and higher temperatures without losing their structure. Cashmere actually needs some contact with water to stay supple, dry cleaning too frequently can strip the fibers of their natural oils, but the way you wash it matters enormously.
Think of cashmere like a high-performance sports car. It’s built for a specific kind of experience, and it rewards you when you treat it right. But skip the maintenance, and things deteriorate fast.
Common Mistakes That Ruin Cashmere
Most cashmere damage happens in the laundry. Here are the big offenders:
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Wringing or twisting the fabric to remove water. This distorts the fibers and stretches the garment out of shape.
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Using hot water. Heat causes cashmere to felt, those fibers mat together into a dense, shrunken mess that’s almost impossible to reverse.
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Tossing it in the dryer. Even on low heat, tumble dryers are too aggressive for cashmere.
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Using regular detergent or fabric softener. Standard laundry detergents are too alkaline and can strip cashmere’s natural lanolin. Fabric softeners coat the fibers and reduce their softness over time.
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Hanging cashmere to dry. Gravity pulls the wet fabric downward, leaving you with a sweater that’s three sizes longer than it was.
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Over-detergenting. Using too much soap leaves residue in the fibers, making them stiff and dull.
If any of these sound familiar, don’t worry, you’re not alone. But now that you know what to avoid, let’s get into the best way to wash cashmere properly.
How to Hand Wash a Cashmere Sweater Step by Step
Hand washing is widely considered the best way to wash cashmere sweaters, and for good reason. It gives you complete control over temperature, agitation, and handling. The process is gentle, straightforward, and takes about 30 to 40 minutes from start to finish (most of which is just soaking time).
Here’s how to do it right:
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Fill a clean basin or sink with cool to lukewarm water, no hotter than 30°C (about 86°F). If the water feels warm to the touch, it’s probably too hot.
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Add about one tablespoon of a cashmere-safe detergent or baby shampoo. Swirl it gently to dissolve.
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Turn your sweater inside out and submerge it in the water.
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Soak for 5 to 30 minutes, depending on how soiled it is. Gently knead the fabric every so often, no scrubbing, twisting, or wringing.
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Drain the basin and refill with fresh cool water. Rinse by gently pressing the sweater to push suds out. Repeat until the water runs clear.
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Press out excess water by laying the sweater flat on a clean towel and rolling it up gently. Never wring.
That’s it. Simple, right? The key is patience and a light touch.
Choosing the Right Detergent for Cashmere
Not all detergents are created equal, and this is one area where it genuinely pays to be picky. Look for wool- or cashmere-specific detergents that are glycerin-based and have a low pH. These clean the fibers effectively without stripping their natural oils.
Brands like The Laundress Wool & Cashmere Shampoo, Eucalan, and Soak are popular choices. In a pinch, baby shampoo works surprisingly well, it’s mild, low-pH, and widely available.
What you want to avoid: regular liquid laundry detergent, anything with bleach or optical brighteners, and fabric softeners. These products are formulated for cotton and synthetics, not delicate animal fibers.
The Soaking and Rinsing Process
The soak is where the actual cleaning happens. Five minutes is enough for a lightly worn sweater. If you’ve been wearing it all day or there’s a noticeable odor, go closer to 30 minutes. You can gently knead the fabric during the soak, but keep the movements slow and deliberate.
Rinsing is just as important as washing. Residual detergent left in the fibers will make cashmere feel stiff and look dull. Rinse in cool water, never switch to warm, and gently squeeze the suds out. It usually takes two or three rinses to get all the soap out. Take your time here.
Best Way to Wash Cashmere Sweaters in a Washing Machine
Let’s be realistic: not everyone has the time or inclination to hand wash every cashmere piece they own. The good news is that you can machine wash cashmere, if you do it carefully. Many modern washing machines have settings specifically designed for delicates, and when used correctly, they can clean cashmere without causing damage.
The best way to wash a cashmere jumper in a machine comes down to three things: the right cycle, the right temperature, and the right protection.
Machine Settings and Cycle Recommendations
Use the woolens, delicate, or hand wash cycle on your machine. These cycles use minimal agitation, which is critical for preventing felting and stretching.
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Water temperature: Cold only. Stay under 30°C (86°F). Most machines’ “cold” setting works fine.
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Spin speed: Keep it at 600 RPM or lower. High-speed spins put too much stress on the fibers.
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Load size: Wash cashmere in a small load. Don’t pack the drum, your sweater needs room to move gently.
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Detergent: Use the same cashmere-friendly detergent you’d use for hand washing. Skip the fabric softener.
And one more thing: don’t let your cashmere sit in the machine after the cycle ends. Remove it promptly to prevent creasing and moisture damage.
Protecting Your Cashmere Jumper During a Machine Wash
Before your cashmere goes anywhere near the drum, place it inside a mesh laundry bag. A clean pillowcase tied at the open end works too. This creates a protective barrier that reduces friction between your sweater and the drum or other garments.
Turn the garment inside out before bagging it. This minimizes surface abrasion and helps preserve the outer appearance of the knit. Button or zip any closures to prevent snagging.
Machine washing is a perfectly acceptable method for cashmere maintenance, but hand washing remains the gentler option. If you’re dealing with an especially delicate or expensive piece, hand washing is still your safest bet.
How to Dry Cashmere Without Stretching or Shrinking
You’ve washed your cashmere perfectly. Don’t blow it at the drying stage.
The golden rule: never hang cashmere to dry, and never put it in the dryer. Hanging causes the wet fibers to stretch under their own weight, while tumble dryers generate heat and friction that lead to shrinkage and felting.
Here’s the proper method:
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Lay a clean, dry towel flat on a surface away from direct sunlight and heat sources (no radiators, no sunny windowsills).
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Place the sweater on the towel and gently reshape it to its original dimensions. Smooth out any bunching or wrinkles with your hands.
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Roll the towel and sweater together to press out excess moisture. Unroll, then transfer the sweater to a second dry towel if the first one is saturated.
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Let it air dry flat for about 24 hours, flipping it once halfway through if you can.
Resist the temptation to speed things up. A fan on low in the room is fine, but don’t aim a hairdryer at it or drape it over a heating vent. Cashmere dries faster than you’d think when laid flat with good air circulation.
If you notice the sweater has shifted shape slightly during washing, the drying stage is your chance to correct it. Gently stretch or compress the fabric back to its original proportions while it’s still damp. Once cashmere dries, it holds whatever shape it’s in.
Removing Stains, Pilling, and Odors From Cashmere
Even with careful wear, cashmere picks up stains, develops pills, and absorbs odors over time. Here’s how to address each without damaging the fabric.
Spot-Treating Common Stains
The sooner you treat a stain, the better your chances of removing it completely. For oil-based stains (salad dressing, butter, makeup), dab a tiny amount of mild dish soap directly onto the stain before washing. For protein-based stains (food, sweat), a paste of baking soda and cool water applied for 15 to 20 minutes can work wonders.
General approach:
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Don’t rub. Blot the stain gently with a clean cloth.
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Pretreat before soaking. Apply your spot treatment, then proceed with a full hand wash.
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Soak stubborn stains for up to 30 minutes in cool water with cashmere detergent.
For red wine or ink stains, you’re often better off taking the garment to a professional cleaner rather than experimenting with home remedies that could set the stain permanently.
Depilling and Refreshing Between Washes
Pilling is inevitable with cashmere, it’s a natural result of friction on fine fibers. But it’s easy to manage. A cashmere comb or a fine-tooth fabric shaver does the trick. Hold the comb at about a 15-degree angle and sweep it gently across the surface in one direction. Don’t press too hard or you’ll thin the fabric.
As for freshening up between washes, cashmere doesn’t need to be laundered after every wear. Most experts recommend washing every two to three wears, assuming normal use. Between washes:
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Air it out by laying it flat or draping it over a chair overnight.
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Use a garment steamer to release wrinkles and kill odor-causing bacteria.
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Store with cedar balls or lavender sachets to keep things smelling fresh naturally.
Overwashing is one of the fastest ways to wear out cashmere, so embrace the “less is more” approach.
How to Store Cashmere to Extend Its Lifespan
Proper storage is just as important as proper washing. Cashmere that’s tossed on a shelf or shoved in a drawer can develop creases, attract moths, and lose its shape.
Here’s how to store your cashmere correctly:
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Always fold, never hang. Hangers create shoulder bumps and stretch the fabric over time.
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Store in a cool, dark, dry place. A dresser drawer, shelf, or airtight storage container all work well. Avoid areas with fluctuating temperatures or high humidity.
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Add moth deterrents. Cedar blocks, cedar rings, or lavender sachets are natural and effective. Avoid mothballs, which leave a chemical odor that’s nearly impossible to remove.
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Alternate your cashmere pieces. If you have multiple sweaters, rotate them. Giving fibers a rest between wears helps them recover their shape and softness.
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Wash before storing for the season. Moths are attracted to body oils and food residue on clothing. Clean cashmere is less appealing to pests.
For long-term seasonal storage, consider placing folded cashmere in breathable garment bags or sealed containers with cedar. This protects against dust, insects, and accidental snags.
When to Trust a Professional With Your Cashmere Care
There are times when DIY cashmere care isn’t the best move. Heavy stains, structured cashmere coats, multi-fabric garments, or pieces with embellishments often benefit from professional handling.
But here’s an important nuance: traditional dry cleaning isn’t always ideal for cashmere. The chemical solvents used in dry cleaning can strip the fibers of their natural moisture and oils, leaving the fabric feeling dry and brittle over time. Cashmere actually benefits from contact with water, it’s what keeps the fibers soft and supple. So if you are going the professional route, look for a service that offers wet cleaning or specializes in delicate natural fibers.
If the idea of hand washing every cashmere garment in your wardrobe sounds exhausting, or if you simply don’t trust yourself not to accidentally shrink your favorite sweater, outsourcing the job is a smart move. Services like Clotheslyne connect you with vetted laundry professionals (called Clotheslyners) who handle your garments with care, using eco-friendly products and customizable preferences. You can note special instructions for delicate items like cashmere, schedule a pickup, and have everything washed, folded, and delivered back to your door. It’s especially useful for busy professionals or families who want their cashmere cared for properly without carving out the time to do it themselves.
The bottom line: if you’re unsure, or if the garment is valuable enough that a mistake would sting, hand it off to someone who knows what they’re doing.
Conclusion
Cashmere is one of those rare fabrics that actually gets better with age, if you take care of it. The best way to wash cashmere comes down to cool water, a gentle detergent, minimal agitation, and flat drying. Whether you hand wash or carefully machine wash, the principles are the same: be gentle, be patient, and skip the shortcuts.
Beyond washing, smart storage and occasional depilling go a long way toward keeping your knits looking and feeling luxurious. And when life gets busy or a garment needs more than your standard kitchen-sink wash, there’s no shame in letting a professional handle it.
Your cashmere sweaters, scarves, and jumpers are an investment. Treat them like one, and they’ll reward you with years of warmth and softness.
Clotheslyne: Your Partner in Cashmere Care
Maintaining the luxurious feel of cashmere can seem daunting when life gets busy. Clotheslyne offers a convenient solution with laundry pick-up and delivery services in select areas, including New York, Nevada, New Jersey, North Carolina, Rhode Island, Connecticut, Alaska, and Massachusetts.
Our Clotheslyners are not just service providers; they are individuals in your community who understand the value of your garments and are dedicated to providing the care they deserve. Trust us to wash, dry, and fold your clothes, giving you time to enjoy life’s softer things. With Clotheslyne, caring for your cashmere and laundry needs has never been easier or more convenient.
To use Clotheslyne, download the iOS Apple App or Google Play Store Android app to schedule your laundry pick up.
You can also schedule your laundry pick up through our web portal.
Fill up a tall kitchen bag full of clothes. A Clotheslyner in your community will pick it up and deliver it back to you washed, dried, and folded in 48 hours. It’s that simple.
Frequently Asked Questions
What is the best way to wash cashmere at home?
The best way to wash cashmere is by hand in cool water (no hotter than 30°C) with a gentle, low-pH detergent like cashmere soap or baby shampoo. Soak for 5 to 30 minutes, gently knead without wringing, rinse in fresh cool water until clear, then press out excess moisture with a towel.
Can you put cashmere in the washing machine?
Yes, you can machine wash cashmere if you use the woolens or delicates cycle with cold water, keep the spin speed at 600 RPM or lower, and place the garment inside a mesh laundry bag turned inside out. Use a cashmere-safe detergent, wash in a small load, and remove the garment promptly when the cycle ends.
How do you dry cashmere without shrinking or stretching it?
Never hang cashmere or tumble dry it. Lay it flat on a clean towel, gently reshape it to its original dimensions, and roll the towel to press out moisture. Then transfer it to a dry towel and air dry flat for about 24 hours, away from direct sunlight, radiators, or heat sources.
How often should you wash a cashmere sweater?
Most experts recommend washing cashmere every two to three wears under normal use. Overwashing accelerates fiber wear. Between washes, air the garment out overnight, use a garment steamer to release wrinkles and odors, and store with cedar balls or lavender sachets to keep it fresh naturally.
Why does cashmere pill, and how do you fix it?
Pilling is a natural result of friction on cashmere’s ultra-fine fibers and doesn’t indicate poor quality. To remove pills, use a cashmere comb or fine-tooth fabric shaver held at about a 15-degree angle, sweeping gently in one direction. Avoid pressing too hard, as this can thin the fabric over time.
Is dry cleaning safe for cashmere garments?
Routine dry cleaning isn’t ideal for cashmere. Chemical solvents can strip the fibers’ natural oils, leaving them dry and brittle. Cashmere actually benefits from contact with water to stay soft and supple. If professional care is needed, look for a service that offers wet cleaning or specializes in delicate natural fibers.