A silk pillowcase earns its keep through contact: your face and hair rest on it for hours every night. That is exactly why it needs washing more often than the rest of your bedding, and why washing it the wrong way is the fastest route to a dull, limp surface. The good news: caring for silk is easy once you know the settings, and it takes five minutes.
The quick answer
Hand wash in cold water with a pH-neutral silk detergent, or machine wash at 30°C maximum on the delicate cycle, in a mesh bag, on the lowest spin. Never use bleach or fabric softener. Never wring. Press the water out between two towels and air dry flat, away from direct sunlight. Never tumble dry, at any temperature.
Why silk needs different rules
Silk is a protein fibre, chemically closer to your hair than to cotton. Treat it as you would treat hair and it lasts for years. Treat it as you would treat cotton and it dulls in weeks. That single fact explains every instruction on this page.
How often should you wash a silk pillowcase?
Every three to four days is ideal, weekly at minimum. The pillowcase collects skin oils, hair products and everything your leave-in left behind, and a clean surface is half of what you bought it for. The painless way to keep that rhythm is a rotation: one pillowcase on the bed, one clean and ready. We break down the ideal count in how many silk pillowcases you really need.
If you switched to silk because of your curls, it is worth knowing whether cotton is good for curly hair in the first place.
Machine washing silk, step by step
- Prepare it. Turn the pillowcase inside out so the lustrous face is protected during the cycle.
- Bag it. Place it in a mesh laundry bag. This is the single most effective habit against snags.
- Set the machine. Delicate or silk cycle, cold water up to 30°C, the lowest spin speed your machine offers.
- Choose the right detergent. A pH-neutral detergent made for silk or wool. Most standard detergents contain enzymes designed to break down protein stains, and silk is a protein. One wash will not ruin it; twenty will.
- Wash it alone. A single zip or hook in the drum will pull the weave.
- Take it out promptly. Remove the pillowcase as soon as the cycle ends and reshape it while damp. Leaving it crumpled in the drum sets deep creases.
Never use: bleach, oxygen bleach, stain removers, or fabric softener. Softener coats the fibre and takes away the very sheen you paid for, and the damage does not undo.
Hand washing, the gentler route
Fill a basin with cold water and a capful of pH-neutral silk detergent. Submerge the pillowcase and swish gently for two to three minutes. Do not rub, do not scrub. Rinse in clean cold water until the water runs clear.
Never wring or twist silk. The fibres stretch when wet and do not return. Press the water out between two towels instead.
Drying silk the right way
Air drying is not a preference, it is the rule. Lay the pillowcase flat on a rack or hang it smoothly over a line, away from radiators and always in the shade. Direct sunlight yellows silk and weakens the fibre permanently, and deeper colourways like Obsidian Black, Ruby Red and Navy Blue fade fastest.
Never tumble dry, at any temperature. Heat is what damages silk fastest. This is the one instruction with no exception and no low-heat workaround.
How to prevent snags and pulls
Wash it separately from anything with zips, hooks or velcro. One open zip in the drum can ruin a silk face.
Keep the mesh bag habit even for quick cycles.
Mind your hands. Rings and rough nails are the everyday culprits, on the bed as much as in the wash.
Perfume and hairspray. Alcohol marks silk permanently. Apply them before you get into bed, never onto the fabric.
Sharing the bed with a cat? Keep claws trimmed and consider a folded throw over the pillows during the day.
Ironing and storage
Most creases fall out if you reshape the pillowcase while it is still damp. If you want a crisp finish, iron on the silk setting — one dot, 110°C maximum — on the reverse side, while the fabric is still slightly damp. A handheld steamer held at a distance works even better and touches nothing.
Store silk clean, completely dry and folded flat in a drawer, away from light and damp. Avoid airtight plastic: silk needs to breathe.
Frequently asked questions
Can you machine wash silk pillowcases?
Yes. Use the delicate cycle at 30°C maximum, in a mesh bag, on the lowest spin, with a pH-neutral silk detergent. Hand washing is gentler and takes five minutes.
What detergent should I use for silk?
A pH-neutral detergent made for silk or wool, with no enzymes, no bleach and no optical brighteners. Standard detergents contain enzymes that break down protein, and silk is a protein.
Why has my silk lost its shine?
The three usual causes are fabric softener, hot water and tumble drying, and all three are irreversible. Cool water, a silk detergent and air drying in the shade keep the sheen for years.
Can I tumble dry silk?
No, at any temperature. Heat is what damages silk fastest. Air dry flat or over a line, always in the shade.
Why is my silk pillowcase snagging?
Usually contact with something sharp: a zip in the same load, jewellery, rough nails or pet claws. The floating threads that create the glide are also what catches, which is why the mesh bag and separate washing matter.
Cared for properly, silk gets better with time. If yours is past saving, our silk pillowcases are 19 momme mulberry silk in ten colours, with free worldwide shipping.
