Cashmere sweaters can be washed at home in cool water with a gentle wool-safe detergent, either by hand or on a delicate machine cycle when the care label allows it.
One wrong wash can shrink, stretch, or felt a cashmere sweater you paid real money for. The good news is that with the right technique, you can wash cashmere at home and keep it soft for years. The single most important rule? Check the care label before you do anything else, because brand-specific instructions always override general guidance. From hand-washing to machine cycles to drying flat, here’s exactly how to do it without ruining the knit.
Hand-Washing: The Safest Method For Most Cashmere
Hand-washing is the gentlest route and the default choice when the care label is silent or says “hand wash.” All you need is a basin, cool water, and a detergent made for wool or cashmere.
Fill a clean sink or basin with cool to lukewarm water—never hot, which shrinks and felts the fibers. Add a small amount of wool or cashmere-specific detergent and swirl it in. Submerge the sweater and gently squeeze the suds through the knit. Don’t rub, scrub, or twist; that distorts the fibers and ruins the shape. Let it soak for about five minutes, then drain and rinse in cool water until the water runs clear.
To remove excess water, press the sweater against the side of the basin or roll it in a clean towel. J.Crew’s own care guidance recommends rolling the sweater in a towel to absorb moisture, then air-drying flat for about 24 hours. Never wring it out, and never hang it wet—gravity will stretch the shoulders and body into a misshapen mess.
Machine-Washing Cashmere: Only When The Label Allows
Machine-washing cashmere is possible, but only when the care label explicitly permits it. Eric Bompard, a French cashmere house, says its sweaters may be machine washed on a cold wool setting with a special wool or cashmere shampoo. That’s the model to follow.
If your label gives the green light, turn the sweater inside out and place it in a mesh laundry bag to protect the knit from friction. Select the wool, hand-wash, or delicate cycle with cold or cool water and the lowest spin speed available—some brands specify roughly 400 to 600 rpm depending on the garment. Skip the fabric softener entirely; it coats the fibers and dulls cashmere’s natural softness. Regular detergent is also out—use a wool-safe formula instead.
When the cycle finishes, lift the sweater out immediately, press out excess water without wringing, reshape it gently, and lay it flat on a towel or drying rack away from direct heat and sunlight.
Drying And Reshaping: The Step Most People Get Wrong
Cashmere dries flat, never in the dryer and never on a hanger. Tumble drying is the fastest way to shrink or felt a sweater, and hanging wet cashmere stretches it permanently.
After washing, lay a clean, dry towel on a flat surface and place the sweater on top, gently reshaping it to its original dimensions—sleeves out, collar neat, body even. Roll the towel up with the sweater inside and press to absorb moisture, then unroll, lay the sweater flat on a fresh towel or drying rack, and let it air-dry completely. Keep it out of direct sunlight and away from radiators or heaters. Expect it to take about 24 hours to dry fully, which is normal. If you need it faster, replace the towel underneath once it gets damp.
Between washes, a cashmere comb or fabric shaver removes pilling without damaging the knit. And when you’re ready to refresh your rotation, our tested picks for the best 100 cashmere sweaters cover brands that hold up wash after wash.
| Cashmere Washing Mistake | What It Does To The Sweater | What To Do Instead |
|---|---|---|
| Hot water | Shrinks or felts the fibers permanently | Use cool to lukewarm water only |
| Rubbing, scrubbing, or wringing | Distorts fibers and ruins the shape | Gently squeeze suds through; roll in a towel to dry |
| Hanging wet cashmere | Stretches the shoulders and body | Lay flat on a towel or drying rack |
| Regular detergent, bleach, or softener | Dulls softness, weakens fibers, or damages color | Use wool/cashmere-specific detergent only |
| Tumble drying | Causes shrinkage and felting | Air-dry flat, away from heat and sun |
| Ignoring the care label | Brand-specific rules get missed | Check the label first; it overrides general advice |
The Final Routine: Wash Less, Care More
Cashmere doesn’t need washing after every wear. Spot-clean small stains, air sweaters out between wears, and wash them only a few times per season. When you do wash, this routine covers every step: check the label, use cool water with wool-safe detergent, treat the sweater gently, press out water without wringing, reshape, and dry flat for about 24 hours. Following the garment’s care label stays your safest baseline, since brand-specific instructions can override general guidance. Do that, and a good cashmere sweater will outlast fast-fashion knits by years.
References & Sources
- New York Times Wirecutter. “How to Wash Cashmere Sweaters.” Provides baseline care guidance for hand- and machine-washing cashmere.
- Eric Bompard. “Cashmere Care.” Confirms machine washing on a cold wool setting is acceptable for its garments.
- J.Crew. “Cashmere Care.” Details cool-water hand washing, towel rolling, and 24-hour flat drying.