Silk has a reputation for being fussy, but a silk pillowcase is far easier to look after than most people expect. There's no dry-clean-only rule and no need for special equipment beyond a mild detergent and a sink. Get a few basics right and a good pillowcase will stay soft, smooth and lustrous for years. Below is exactly how to wash a silk pillowcase, step by step, along with the handful of mistakes worth avoiding.
Before you start: what you'll need
Silk is a natural protein fibre, closer to hair than to cotton, so it responds best to gentle handling and cool water. Gather these first:
- A pH-neutral detergent, or one made specifically for silk or delicates.
- A clean sink or basin, and cool water (no warmer than about 30°C).
- A mesh laundry bag, if you plan to use a machine.
- A clean, dry towel for removing excess water.
Check the care label on your pillowcase too. Most quality mulberry silk is hand- or machine-washable on a delicate setting, but the manufacturer's guidance always comes first.
Hand washing, step by step
Hand washing is the gentlest method and the one we'd recommend for regular care. It takes about ten minutes.
- Fill a basin with cool water, up to around 30°C. Anything hotter can dull the fibres and cause shrinkage.
- Add a small amount of pH-neutral or silk detergent and swirl it through the water until dissolved.
- Submerge the pillowcase and gently swish it for two to three minutes. Let the water do the work rather than scrubbing or rubbing.
- For a marked area, lightly press the spot between your fingers. Don't scour it.
- Drain the basin and rinse the pillowcase under cool running water until no suds remain.
- Never wring or twist it. Instead, press the water out gently, then lay the pillowcase flat on a dry towel, roll the towel up and press to absorb the moisture.
A quick note on detergent: avoid bleach, biological or enzyme-based detergents, and fabric softener. Enzymes are designed to break down protein stains, and because silk is a protein, they slowly break down the fibre too.
Machine washing safely
You can machine wash silk, provided you treat it kindly. Place the pillowcase inside a mesh laundry bag to protect it from snagging and stretching. Use the delicate or dedicated silk cycle, a cold wash, and a mild detergent. Set the spin to low or, ideally, off, since a fast spin puts stress on the fibres. Wash silk on its own or with other light, delicate items rather than heavy fabrics or anything with zips and hooks.
Drying
Drying is where silk is most often damaged, so it's worth slowing down here.
- Never tumble dry. Heat and tumbling weaken silk quickly.
- Keep it out of direct sunlight, which fades colour, and away from radiators or other direct heat.
- Lay the pillowcase flat, or hang it in a shaded, well-ventilated spot, and let it air dry naturally.
Silk dries faster than cotton, so it usually needs only a few hours out of direct heat.
Ironing and storage
Most silk pillowcases look smooth once dry and need little or no ironing. If yours does need a press, iron it on the low or silk setting, on the reverse side, while the fabric is still very slightly damp. A cool steam from a handheld steamer, held a little away from the fabric, works well too. Avoid spritzing water directly onto silk as you iron, as droplets can leave marks.
Store your pillowcase somewhere cool and dry, out of direct light. A breathable cotton bag is better than sealed plastic, which can trap moisture.
How often should you wash it?
For skin and hair benefits, wash your silk pillowcase every one to two weeks, a little more often if you use night creams, have oily skin, or go to bed with damp hair. Regular washing keeps the surface clean without wearing the fibres out, as long as you're using the gentle methods above. It helps to keep a second pillowcase in rotation so one is always ready.
Mistakes to avoid
Here's the short version of what keeps silk looking its best:
| Do | Don't |
| Use cool water, up to ~30°C | Use hot water |
| Choose a pH-neutral or silk detergent | Use bleach, enzyme or biological detergent |
| Press water out gently | Wring or twist the fabric |
| Air dry in the shade | Tumble dry or dry in direct sun |
| Iron cool on the reverse side | Iron hot or on the right side |
Dealing with stains
Treat marks promptly and gently. For makeup or oil, blot (don't rub) with a clean cloth to lift the excess, then hand wash the pillowcase in cool water with a little silk detergent. A tiny dab of gentle, undyed washing-up liquid can help shift an oily mark before washing. Always test any spot treatment on a hidden corner first, and steer well clear of stain removers containing bleach or enzymes.
Frequently asked questions
Can you machine wash silk?
Yes, as long as you use a mesh laundry bag, a delicate or silk cycle, cold water, mild detergent and a low or no spin. Hand washing is still the gentlest option for frequent care.
What detergent should I use for silk?
A pH-neutral detergent or one formulated for silk and delicates. Avoid biological and enzyme detergents, bleach and fabric softener, all of which can damage the fibres over time.
How do I dry a silk pillowcase?
Press out excess water with a towel, then lay it flat or hang it in a shaded, airy spot. Never tumble dry, and keep it away from direct sunlight and radiators.
Does washing ruin the silk over time?
Not when it's done gently. Cool water, a mild detergent and air drying let a well-made silk pillowcase handle a wash every week or two for years without losing its softness.
A pillowcase built to last
Good care matters most when the silk itself is worth caring for. A well-made 22 momme, Grade 6A mulberry silk pillowcase, like Lunare Home's, is dense and tightly woven, so it holds up beautifully to regular washing when you follow the steps above. It's OEKO-TEX® Standard 100 certified, priced at £50.99, and comes with a 30-Night Sleep Trial, so you can settle into a proper care routine with confidence.
