Author: Haadi Badar, Founder, Silsilah Studio
Cashmere doesn't need frequent washing. In fact, cleaning it too often is one of the quickest ways to shorten its lifespan. Our advice is simple: dry clean genuine cashmere whenever possible, and only when it truly needs it [source: Silsilah Studio care guidance]. More often than not, the wear caused by repeated washing outweighs the benefit of washing in the first place.
The same principle applies whether you're caring for a sweater, scarf, or shawl.
At Silsilah, we developed our Materials & Care standard around pure pashmina—the finest grade of cashmere fiber [source: pashmina fiber documentation]. This guide brings that same approach to cashmere as a whole, so you can keep your pieces looking and feeling their best for years.
How Do You Wash Cashmere Without Ruining It?
Dry cleaning remains the safest option for genuine cashmere in most situations [source: textile care industry standards]. If you do decide to hand-wash it, keep the process as gentle as possible.
Fill a basin with cool water, add a small amount of pH-neutral detergent, and gently move the garment through the water. Avoid scrubbing, twisting, or wringing the fabric. Once finished, rinse thoroughly with cool water.
Hot water should never be used. Heat can cause fine animal fibers to felt or shrink, and that kind of damage is permanent.
Can You Machine Wash Cashmere?
In most cases, no. Genuine cashmere isn't designed for a standard washing machine [source: independent textile care documentation on machine washing risks].
Even on a gentle cycle, a machine combines agitation, changing water temperatures, and high-speed spinning. Together, these can cause the tiny scales on cashmere fibers to lock together—a process known as felting. When that happens, the fabric becomes smaller, stiffer, and loses the soft drape that makes cashmere special.
If your garment is specifically labeled as machine washable, follow the care label exactly. Some manufacturers treat or blend their cashmere to make it suitable for machine washing. Unless the label clearly says so, it's safest to assume genuine cashmere should be washed by hand or professionally cleaned.
How to Dry Cashmere Correctly
After washing, gently press out excess water without twisting the fabric.
Lay the garment flat on a clean, dry towel and let it air dry naturally [source: textile care documentation]. Before leaving it to dry, reshape it while it's still damp so it keeps its original silhouette.
Never hang wet cashmere. The weight of the water can stretch the fibers and permanently alter the shape. Likewise, skip the tumble dryer—heat is just as damaging to cashmere as hot water.
What Detergent Is Safe for Cashmere?
Choose a gentle, pH-neutral detergent made for wool or other delicate natural fibers [source: detergent formulation documentation].
Avoid detergents that contain enzymes or optical brighteners. They're formulated to break down organic stains aggressively, which also makes them harsher on delicate animal fibers.
If a specialty wool wash isn't available, a detergent designed for delicates or baby clothing is often a practical alternative.
How Often Should You Wash Cashmere?
Much less often than you might think [source: fiber odor-resistance documentation].
Cashmere naturally resists odors and doesn't trap dirt as quickly as many synthetic fabrics. In most cases, letting the garment air out after wearing it is enough to freshen it before it's folded away again.
Washing should be occasional rather than routine. Doing less is often the best way to preserve the softness, shape, and longevity of genuine cashmere.
How to Remove a Stain from Cashmere
Treat stains as soon as you notice them [source: stain removal documentation for delicate fiber].
Use cool water with a small amount of gentle detergent, then blot the stain carefully from the outside toward the center. This helps stop the stain from spreading through the surrounding fabric.
Avoid rubbing or scrubbing. Friction can push the stain deeper into the fibers while also creating unnecessary pilling.
How to Store Cashmere Between Seasons
When the season ends, store cashmere folded rather than on a hanger [source: Silsilah Studio care guidance]. Hanging places constant tension on the shoulders and neckline, which can slowly distort the garment's shape.
Choose a breathable storage bag or a clean drawer away from direct sunlight. For moth protection, cedar blocks or lavender sachets are a better choice than mothballs, which can leave behind an odor that's difficult to remove from natural fibers.
If you'd like to see the same care philosophy applied specifically to pure pashmina, explore our full Materials & Care guide.
See what pure pashmina feels like.