Cashmere sweaters are beloved for their unparalleled softness, warmth, and luxurious texture.
Whether you’re wearing a classic crewneck, a cozy cardigan, or a chic turtleneck, a high-quality cashmere piece is an investment in your wardrobe. However, many people hesitate to clean their cashmere sweaters at home, fearing that improper washing will ruin the delicate fibers—causing shrinkage, pilling, or loss of softness. The good news? With our right techniques and a little care, you can safely wash your cashmere sweaters at home and keep them looking like new for years to come.
In this comprehensive guide, we’ll break down everything you need to know about how to wash cashmere sweaters, from pre-wash preparation to drying and storage. We’ll also address common myths, answer frequently asked questions, and share pro tips to extend the life of your favorite cashmere pieces. Whether you’re a cashmere novice or a seasoned collector, this guide will become your go-to resource for keeping your cashmere clean and cozy.
Why Cashmere Requires Special Care
Before diving into the washing process, it’s important to understand why cashmere needs more gentle treatment than regular cotton or wool sweaters. Cashmere fibers come from the undercoat of cashmere goats, which are native to the harsh mountain regions of Central Asia. These fibers are incredibly fine—about one-fifth the diameter of a human hair—and have a delicate scale structure. Unlike wool, which is more durable, cashmere fibers are prone to damage if exposed to harsh chemicals, high temperatures, or rough handling.
Improper washing can lead to several issues: shrinkage (cashmere can shrink by up to 20% if washed in hot water), pilling (when fibers rub together and form small balls), felting (fibers matting together permanently), and loss of softness. By following the correct washing methods, you’ll protect these delicate fibers and ensure your cashmere sweaters retain their luxurious quality.
Pre-Wash Preparation: 3 Critical Steps
Before you start washing, take a few minutes to prepare your cashmere sweater. This step is often overlooked but is key to preventing damage and ensuring a thorough clean.
1. Check the Care Label First
In the United States, care labels are regulated under the Federal Trade Commission (FTC) Care Labeling Rule, which requires brands to provide accurate cleaning and care instructions based on the garment’s fiber composition and construction.
The care label is your best friend when it comes to cleaning any garment, and cashmere is no exception. Most cashmere sweaters will have one of two instructions: “Dry Clean Only” or “Hand Wash.” It’s crucial to follow these guidelines—if the label says “Dry Clean Only,” do not attempt to wash it at home, as this may void any warranties or damage the sweater. If the label allows hand washing, proceed with the steps below.
Pro tip: Even if the label says “Dry Clean Only,” some experts suggest that gentle hand washing with a cashmere-specific detergent is safer than dry cleaning. Dry cleaners often use harsh chemicals like perchloroethylene, which can break down cashmere fibers over time. If you’re unsure, test a small, inconspicuous area (like the inside of the hem) with a drop of detergent and water to see if it causes discoloration or damage.
2. Treat Stains Immediately
Stains on cashmere should be treated before washing to prevent them from setting. Never rub a stain—this will push the dirt deeper into the fibers and cause pilling. Instead, gently blot the stain with a clean, damp cloth to remove excess moisture or debris. For oil-based stains (like food grease or makeup), sprinkle a small amount of cornstarch or talcum powder on the stain and let it sit for 30 minutes to absorb the oil. Then, gently brush off the powder with a soft-bristled brush (like a clean makeup brush).
For water-based stains (like coffee or wine), mix a drop of cashmere detergent with a small amount of lukewarm water and dab the stain with a cloth dipped in this solution. Always work from the outside of the stain toward the center to prevent it from spreading.
3. Prepare to Wash the Sweater
Turn the sweater inside out to protect the outer surface from friction during washing. This also helps to clean the inner part of the sweater, which comes into contact with your skin and absorbs sweat and oils. Fasten any buttons, zippers, or snaps to prevent them from snagging the delicate fibers during the washing process.
The Correct Way to Hand Wash Cashmere Sweaters
Hand washing is the safest method for cleaning cashmere sweaters at home—machine washing (even on a gentle cycle) can be too rough on the fibers. Follow these steps for a gentle, effective clean:
Step 1: Gather Your Supplies
You’ll need a few basic supplies to wash your cashmere sweater:
·Clean, large basin or sink
Find a suitable and clean container; a large basin or sink is a good choice. Avoid using metal basins, because they can react with detergent and stain the sweater.
· Cashmere-specific detergent
Look for a mild, pH-neutral detergent that is free of harsh chemicals, bleach, and fabric softeners. Avoid using regular laundry detergent, as it can be too alkaline and damage cashmere fibers. Be sure not to use woolite. Although it has been recommended by many people before, it can actually damage the yarn structure. If you don't have professional cashmere-specific detergent available at hand for the time being, you can also try using additive-free baby shampoo.
· Lukewarm water
Prepare lukewarm water at a temperature between 30°C/86°F and 35°C/95°F. Cold water can also be used,but lukewarm water helps to dissolve the detergent more effectively. Never use hot water.
Water temperature plays a critical role in preventing shrinkage. As explained by Wikipedia’s overview of felting, heat and agitation cause fine animal fibers to interlock permanently, leading to irreversible shrinkage and stiffness in cashmere garments.
· A clean, soft towel
Get a clean and soft towel, preferably a microfiber towel, as it is gentle and absorbs moisture well. Its smooth surface won’t snag or pill delicate cashmere, helps remove excess water from your sweater without causing friction damage.
· A flat drying rack
Find a clothes drying rack where there is enough space to lay this cashmere sweater flat. Avoid using hangers, as they can stretch the sweater.
Step 2: Prepare the Washing Solution
Fill the basin or sink with lukewarm water. Add the recommended amount of cashmere detergent (usually 1-2 teaspoons for a small basin of water) and stir gently to dissolve the detergent. Do not create excessive suds, because this can be difficult to rinse out and may leave residue on the sweater.
Step 3: Submerge and Soak the Sweater
After turning the prepared sweater inside out, gently submerge it into the washing solution. Make sure the sweater is fully saturated with water, but do not twist or wring it. Let the sweater soak for 20-25 minutes— this is enough time to loosen dirt and oils without damaging the fibers. Do not soak the sweater for longer than 30 minutes, as this can cause the fibers to weaken.
Step 4: Gently Clean the Sweater
After soaking, gently squeeze the sweater to remove dirt—do not rub, scrub, or twist. For areas that are particularly dirty (like the neckline or cuffs), gently press the fabric between your palms to clean. Avoid using a brush or any abrasive tools, as they will cause pilling.
Step 5: Rinse Thoroughly
Drain the soapy water from the basin. Refill it with clean lukewarm water and submerge the sweater again. Gently squeeze the sweater to release any remaining detergent. Repeat this process until the water runs clear and there is no more soap residue on the sweater. Residue can cause the sweater to feel stiff or attract more dirt, so it’s important to rinse thoroughly.
Step 6: Remove Excess Water (Without Wringing!)
Once the sweater is fully rinsed, gently lift it out of the basin and press it between your palms to remove excess water. Squeeze as much water out as you can. Do not twist or wring the sweater—this is the number one cause of shrinkage and fiber damage. Lay the sweater flat on a clean, dry towel and roll the towel up with the sweater inside, pressing gently as you roll to absorb more moisture. Unroll the towel and remove the sweater.
Drying Cashmere Sweaters: Do’s and Don’ts
Do: Dry Flat on a Clean Surface
Lay the sweater flat on a clean, dry towel or a flat drying rack. Reshape the sweater to its original size and shape—gently pull the sleeves, body, and neckline to restore their proper dimensions. Make sure the sweater is not folded or bunched up, as this will cause creases that are hard to remove.
Don’t: Hang the Sweater
Never hang a wet cashmere sweater on a hanger. The weight of the water will stretch the fibers, causing the shoulders to become misshapen (a common issue known as “hanger bumps”). Even dry cashmere sweaters should be stored folded, not hung, to prevent stretching.
Do: Keep Away from Heat and Direct Sunlight
Dry the sweater in a cool, well-ventilated area. Avoid direct sunlight, as it can fade the color of the sweater. Do not use a dryer (even on a low heat setting), a radiator, or a hair dryer to speed up the drying process—high heat will shrink and damage the cashmere fibers. Depending on the humidity, the sweater may take 24-48 hours to dry completely.
Don’t: Touch the Sweater Until It’s Fully Dry
Avoid handling the sweater while it’s damp, as this can leave fingerprints or stretch the fibers. Once it’s fully dry, you can gently fluff the sweater with your hands to restore its softness.
Post-Wash Care: Reducing Pilling and Extending Lifespan
Even with proper washing and drying, cashmere sweaters may develop pilling over time—this is normal and caused by friction (like rubbing against a jacket or bag). For Onward cashmere sweaters, which are made from premium, tightly woven cashmere fibers, pilling is minimal, but proper post-wash care will further extend their sleek appearance. Here are some tips to reduce pilling and keep your cashmere (especially Onward pieces) looking great:
1. Use a Cashmere Comb or Piller Remover
A cashmere comb (a small comb with fine teeth) or a battery-operated piller remover is a great tool for removing pills. Gently glide the comb over the surface of the dry sweater to remove loose pills. Be careful not to press too hard, as this can pull out healthy fibers.
2. Wash Less Frequently
Cashmere doesn’t need to be washed after every wear—over-washing can weaken the fibers. Cashmere sweaters are not like clothes made of other materials. Cashmere is equivalent to animal hair. Most natural animal fiber furs have self-cleaning properties, so you may not need to wash them frequently.
Instead of washing, air out the sweater by placing it in a well-ventilated area for 24 hours. This will help to remove any odors. You can also spot-clean small stains instead of washing the entire sweater.
3. Store Properly
When storing cashmere sweaters (especially during the off-season), fold them neatly and place them in a breathable storage bag (like a cotton pillowcase) to protect them from dust and moths. Natural fibers like cashmere are particularly attractive to moths during storage. Smithsonian Magazine notes that moths are drawn to proteins found in animal fibers, making proper storage with breathable materials and natural repellents such as cedar or lavender essential for long-term garment protection. So when storing cashmere sweaters, add a moth repellent (like cedar balls, lavender sachets, or moth crystals) to the storage area. Avoid using plastic bags, as they trap moisture and can cause mildew.
4. Avoid Wearing with Rough Fabrics
To reduce pilling, avoid wearing cashmere sweaters with rough fabrics like denim, coats with coarse fibers, or bags with textured straps. These fabrics will rub against the cashmere and cause pills to form.
Common Myths About Washing Cashmere Sweaters
There are many misconceptions about cleaning cashmere. Let’s debunk some of the most common myths:
Myth 1: Cashmere Must Be Dry Cleaned Every Time
As we mentioned earlier, many cashmere sweaters can be safely hand washed at home. Dry cleaning is only necessary if the care label specifically says so, or if the sweater has a large, stubborn stain that you can’t remove with spot cleaning. Frequent dry cleaning can actually damage cashmere fibers due to the harsh chemicals used. So try to avoid frequently taking it to a dry cleaner for cleaning. Dry cleaner is not the best way to clean.
Myth 2: You Can Use Regular Laundry Detergent
Regular laundry detergent is too harsh for cashmere. It contains alkaline ingredients that can break down the delicate fibers, causing the sweater to lose its softness and become stiff. Always use a detergent that is specifically formulated for cashmere or wool.
Myth 3: Machine Washing on Gentle Cycle Is Safe
Even on a gentle cycle, washing machines use agitation to clean clothes, which is too rough for cashmere. The spinning motion can twist and stretch the fibers, leading to shrinkage and distortion. Hand washing is always the safest option.
Myth 4: Fabric Softener Makes Cashmere Softer
Fabric softener leaves a residue on cashmere fibers, which can make the sweater feel greasy and attract more dirt. It can also break down the fibers over time, reducing the sweater’s lifespan. Instead of fabric softener, use a cashmere-specific fabric softener or add a small amount of white vinegar to the final rinse to restore softness. Especially when you try to restore the original color of white clothes, white vinegar is a good choice, because vinegar acts a natural bleaching agent that can greatly help you rejuvenate your favorite white clothes. Of course, the white vinegar also needs to be thoroughly rinsed clean.
Final Thoughts: Invest in Care for Long-Lasting Cashmere
Washing cashmere sweaters at home may seem intimidating at first, but with the right techniques, it’s a simple and safe process. By following the steps outlined in this guide—from pre-wash preparation to drying and storage—you’ll protect your cashmere investment and keep your sweaters soft, warm, and beautiful for years to come.
Remember: The key to caring for cashmere is gentleness. Avoid harsh chemicals, high heat, and rough handling, and your cashmere sweaters will reward you with years of comfort and style. Whether you’re wearing your cashmere to the office, on a weekend getaway, or just lounging at home, proper care will ensure it always looks its best.
If you have any other questions about how to wash cashmere sweaters, feel free to leave a comment below. And if you’re in the market for new cashmere pieces, look no further than Onward—our collection of high-quality, ethically sourced cashmere sweaters is designed to stand the test of time with the right care. Each Onward cashmere piece is crafted from premium cashmere fibers, combining timeless design with exceptional durability, making it a worthy addition to your wardrobe investment.
FAQs About Washing Cashmere Sweaters
A: It depends on how often you wear it and if it gets stained. Generally, cashmere sweaters only need to be washed every 3-5 wears. For sweaters that are worn close to the skin, you may need to wash them more frequently. Always air out the sweater after wearing it to reduce the need for washing.
A: It’s best to wash cashmere sweaters separately to avoid friction with other fabrics. If you must wash it with other clothes, only wash it with other delicate items (like silk blouses) and use a mesh laundry bag to protect it. Never wash cashmere with heavy or rough clothes (like jeans or towels).
A: If your cashmere sweater shrank, you may be able to stretch it back to its original size. Fill a basin with lukewarm water and add a small amount of cashmere detergent. Submerge the sweater and let it soak for 10 minutes. Gently stretch the sweater to its original size and shape, then lay it flat to dry. This method works best for minor shrinkage—severe shrinkage may be permanent.
A: To prevent fading, wash colored cashmere sweaters in cold water (instead of lukewarm) and use a detergent that is formulated for colored fabrics. Avoid soaking the sweater for too long, and rinse thoroughly to remove all detergent residue. Dry the sweater in a cool, dark area to further prevent fading.
Post time: Feb-10-2026
