The Cashmere Care Bible: Washing, Storage, and Pilling Prevention
Professional methods for extending the lifespan of investment knitwear, from the boutique treatment your Loro Piana deserves to the storage tricks atelier teams swear by.
A cashmere sweater that pills after three wears isn't badly made—it's badly cared for.
Why Cashmere Care Matters More Than You Think
The difference between a crewneck that lasts two seasons and one that becomes an heirloom isn't always ply count or provenance. It's how you treat it between wears. Proper cashmere care washing storage isn't precious—it's pragmatic. When you're spending north of £500 on a piece from Brunello Cucinelli or Loro Piana, the cost-per-wear calculation depends entirely on longevity. And longevity depends on technique.
The fibres themselves are remarkably resilient. Cashmere goats evolved to withstand Mongolian winters; the problem is that most of us treat their wool like cotton. Heat, agitation, and neglect are the trinity of knitwear destruction. Learn to avoid them, and your wardrobe becomes an archive.
Washing: The 20-Minute Method
Hand-washing cashmere sounds laborious until you realize it takes less time than a dry cleaning drop-off. The process is simple:
- Fill a clean basin with cool water (never warm—heat causes felting)
- Add a capful of specialist wool wash (The Laundress Wool & Cashmere Shampoo or Eucalan are both excellent)
- Submerge the garment and gently press the water through the fibres for 30 seconds
- Let it soak for 10 minutes, no longer
- Drain, then press out excess water without wringing or twisting
- Roll the sweater in a clean towel to absorb moisture
- Lay flat to dry on a mesh rack or fresh towel, reshaping to original dimensions
The key word throughout is gentle. Cashmere fibres are smooth and fine; friction is the enemy. If you must use a machine, choose the delicate cycle, cold water, and place the garment inside a mesh laundry bag. Loro Piana actually recommends machine washing for some of their pieces, but always check the care label first.
Frequency matters too. Wash after every three to four wears for pieces worn against skin, less often for layering knits. Over-washing strips natural oils and shortens lifespan.
Storage: Climate Control and Geometry
Cashmere care washing storage protocol doesn't end when the garment dries. Storage is where most damage occurs, usually from moths or misshapen hangers.
Always fold, never hang. The weight of cashmere on a hanger creates shoulder dimples that become permanent. Fold along natural lines—shoulder seams aligned, sleeves laid flat—and stack horizontally in a drawer or on a shelf. If space is tight, roll instead of fold to minimize creasing.
Moths are attracted to soiled fibres, which is why pre-storage washing is non-negotiable. Add cedar blocks or lavender sachets to drawers (replace annually when the scent fades), and for long-term storage, use breathable cotton garment bags rather than plastic, which traps moisture and encourages mildew.
Temperature swings and humidity are equally destructive. A climate-controlled closet is ideal, but failing that, avoid storing cashmere in basements or attics where conditions fluctuate.
Pilling: Prevention and Removal
Pilling happens when shorter fibres work their way to the surface and tangle. It's a natural consequence of wear, not a defect, but it can be managed.
Prevention starts with friction awareness. The areas that pill first—underarms, sides, anywhere a bag strap rests—are high-contact zones. Rotate pieces regularly rather than wearing the same sweater weekly. When you do wear cashmere, let it rest for 24 hours afterwards; fibres need time to recover their shape.
When pills appear, resist the urge to pick at them. Use a cashmere comb (a small tool with fine metal teeth) or a battery-powered fabric shaver. Work gently in one direction, never pressing hard against the knit. The goal is to remove the pilled fibres without damaging the ones beneath.
Brunello Cucinelli's atelier team reportedly uses vintage sweater stones—pumice-like blocks that lift pills through gentle abrasion. They're harder to find but worth seeking out for delicate vintage pieces.
The Long Game
Cashmere rewards patience. A well-maintained sweater develops a soft patina over years, the fibres relaxing into a second-skin suppleness that new knitwear can't replicate. The irony is that proper care makes the garment look less precious, more lived-in, better.
Treat it well, and it stops being an investment piece. It just becomes yours.
