Can You Wash a Cashmere Sweater?

Yes, You Can Wash Cashmere at Home

The dry clean only label on most cashmere sweaters is a recommendation, not a requirement. Cashmere fibers respond well to water-based cleaning when handled correctly — and many cashmere experts actually prefer hand washing over dry cleaning because it avoids the chemical solvents that can strip natural oils from the fiber over time.

The key is understanding what damages cashmere (heat, agitation, harsh detergent) and avoiding all three. Once you know the rules, washing cashmere at home takes about 15 minutes of active work and produces results as good as or better than professional cleaning.

How to Hand Wash a Cashmere Sweater

Hand washing is the safest method and the one most cashmere care experts recommend.

What You Need

• A clean basin, sink, or bucket
• Cold or lukewarm water — never above 30°C (86°F)
• A pH-neutral, enzyme-free wool or cashmere detergent
• Two clean, dry towels

Step-by-Step

1. Fill the basin with cold water. Add a small amount of cashmere detergent — a teaspoon is usually enough for one sweater. Swirl to dissolve.
2. Submerge the sweater. Press it gently into the water so it absorbs evenly. Do not bunch, twist, or wring.
3. Soak for 15 to 30 minutes. The soaking does most of the cleaning work. You can gently press the sweater a few times during the soak, but avoid rubbing or scrubbing.
4. Drain and rinse. Lift the sweater out (support its weight — do not let it hang) and drain the soapy water. Refill with clean cold water and submerge again to rinse. Repeat until the water runs clear with no suds.
5. Remove excess water. Lay the sweater flat on a clean towel, roll the towel up with the sweater inside, and gently press. This absorbs water without wringing. Repeat with a second dry towel if needed.
6. Dry flat. Lay the sweater on a dry towel on a flat surface. Reshape it to its original dimensions while still damp. Keep away from direct heat and sunlight. Flip once during drying.

Drying takes 12 to 24 hours depending on the knit weight and humidity. The sweater must be completely dry before folding and storing.

Can You Machine Wash Cashmere?

Yes — if your machine has a wool or delicate cycle with cold water and low or no spin. Place the sweater in a mesh laundry bag, use cashmere-safe detergent, and remove immediately after the cycle ends.

Machine washing is not suitable for lightweight, loosely knit, or embellished cashmere. Top-loading machines with a center agitator should never be used for cashmere regardless of cycle settings.

For the full machine washing guide with settings tables, see our machine washing cashmere guide.

Which Detergent to Use

The detergent matters more than you might think. Standard laundry detergent contains enzymes designed to break down protein-based stains — and cashmere fibers are protein. Using regular detergent on cashmere is like using dish soap on your hair.

Detergent Type	Safe for Cashmere?	Notes
Cashmere/wool-specific detergent	Yes	Best choice. pH-neutral, no enzymes, designed for animal fibers.
Baby shampoo	Yes	Gentle pH, no enzymes. Good substitute if you do not have wool detergent.
Mild dish soap (very small amount)	In emergencies	Can strip some natural oils. Use only a tiny drop if nothing else is available.
Standard laundry detergent	No	Contains enzymes and alkaline compounds that break down cashmere fibers.
Fabric softener	No	Coats fibers and reduces natural softness over time. Counterproductive.
Bleach or oxy-clean	No	Destroys animal protein fibers. Will ruin cashmere permanently.

How Often Should You Wash Cashmere?

Less than you think. Cashmere does not need washing after every wear — overwashing is actually one of the fastest ways to wear out a cashmere sweater.

The general rule: wash every 3 to 5 wears. Between washes, air the sweater out overnight after wearing. Cashmere fibers naturally release absorbed odors when exposed to fresh air.

Wash sooner if the sweater has visible stains, noticeable odor that does not air out overnight, or if it was worn during heavy activity. Wash less often for sweaters worn as outer layers with a base layer underneath.

Spot clean small stains between full washes. A damp cloth with a drop of cashmere detergent handles most food or drink spills without requiring a full soak. See our wet cashmere guide for spot cleaning details.

What About Dry Cleaning?

Dry cleaning works but is not always the best option for cashmere. The chemical solvents used in dry cleaning (perchloroethylene or hydrocarbon-based) can strip natural lanolin-like oils from the fiber over time, making the cashmere feel less soft and more brittle.

Dry cleaning makes sense for:

• Cashmere garments with structural elements (tailored blazers, coats) that might lose shape in water
• Heavily stained items that need professional spot treatment
• Very large or heavy cashmere pieces that are difficult to handle when wet

For standard cashmere sweaters, hand washing at home produces better long-term results and costs nothing beyond the detergent.

Drying Rules

How you dry cashmere is as important as how you wash it:

• Never use a tumble dryer. Even on no-heat settings, the mechanical tumbling damages fibers.
• Never hang cashmere to dry. The weight of the water stretches the shoulders and body. Cashmere should always be dried flat.
• Never use direct heat. Radiators, hairdryers, and direct sunlight all damage the fiber structure.
• Always reshape while damp. Gently pull the sweater back to its original dimensions before it dries. Once dry, the shape is set.

Common Washing Mistakes

Using hot water. Hot water felts cashmere by locking the fiber scales together permanently. Always cold or barely lukewarm.

Wringing out water. Twisting a wet cashmere sweater stretches and distorts the knit. Press water out between towels instead.

Soaking too long. While 15-30 minutes is ideal, leaving cashmere submerged for hours can weaken the fibers and distort color. Set a timer.

Rubbing stains. Rubbing wet cashmere causes localized felting and pilling. Always blot, never rub.

Washing too often. Every wash shortens the fiber's lifespan slightly. Wash only when truly needed, not out of habit.

After Washing: Storage

Once your cashmere is clean and completely dry, store it folded — never on a hanger. Fold along the natural lines of the garment and stack with the heaviest pieces on the bottom. Add cedar blocks or lavender sachets as moth deterrents, and use breathable storage bags for seasonal items.

For complete prevention tips, see our guide on preventing and repairing cashmere holes.