Quick answer
Check the care label, then wash the silk pillowcase inside out in cool or lukewarm water with a small amount of mild, pH-neutral, enzyme-free detergent. Hand washing is the gentlest option. If the label allows a machine, use a mesh bag, a delicate cycle and a low spin. Do not wring, do not use bleach or fabric softener, and do not tumble dry. Roll the case in a clean towel and air dry in the shade.
Before you start
- Read the label. Maker instructions override general advice. Some silk is dyed in ways that bleed, and some finishes need dry cleaning.
- Test for colorfastness. Dab a hidden seam with a damp white cloth and a drop of the detergent; if color transfers, hand wash alone and consider professional cleaning.
- Gather supplies: a clean basin, a silk-safe or delicate liquid detergent, a mesh laundry bag (for machine washing) and a clean, light-colored towel.
Silk is a protein fiber and is usually considered weaker when wet, which is why gentle handling matters.
Hand washing step by step
- Fill a clean basin with cool or lukewarm water. Do not use hot water.
- Add a few drops of silk-safe or delicate liquid detergent and swirl to mix.
- Turn the pillowcase inside out and submerge it. Swish gently for a few minutes. Do not scrub, twist or soak for long.
- For a specific mark, gently work a drop of detergent into it with your fingertips.
- Drain and rinse in fresh cool water until the suds are gone. Repeat if needed.
Machine washing, if the label allows
- Turn the case inside out and put it in a mesh bag.
- Choose a cold, delicate or silk cycle with a low spin.
- Use a small amount of mild, enzyme-free detergent.
- Wash it with only a few other delicates, not towels or items with zippers or Velcro.
Drying and ironing
Lay the wet case flat on a clean towel, roll the towel up and gently press to absorb water, then unroll. Do not wring. Lay the case flat or hang it in the shade, away from direct sun and heat. Skip the tumble dryer. If you want to iron, use the lowest or silk setting while the fabric is slightly damp, with a pressing cloth, and follow the label. For smoothing wrinkles without an iron, see tips for steaming clothes.
Choosing a detergent: what about Dawn?
Silk-specific or pH-neutral, enzyme-free detergents are the safest choice because enzymes and strong alkaline cleaners can damage protein fibers. Dish soap is a degreaser and many care guides advise against using it on silk; some people do use a very small amount in an emergency, but this is a riskier choice and not something we recommend. If you must try something, test on a hidden spot, use only a drop in plenty of cool water, and rinse very thoroughly.
“Dry clean only” labels
A dry clean only label is the maker’s instruction (our guide to dry cleaning vs the washing machine explains what that label means), and ignoring it can cost you the garment’s warranty or its finish. Some silk labeled that way can be hand washed successfully, but there is a risk of dye loss or texture changes. If it is valuable, ask a cleaner experienced in silk. If you choose to hand wash, patch test first and keep the water cool.
Yellowing and stains on silk
Silk pillowcases yellow for the same reasons other cases do: skin oils, sweat, skincare and hair products, and sometimes detergent residue. Some people’s cases yellow faster than others simply because of their skin, hair products and routine.
- Wash more often and rinse thoroughly.
- Spot treat with a drop of silk-safe detergent in cool water, dab (do not rub), and rinse.
- Do not use chlorine bleach on silk; it can damage and discolor the fibers. Oxygen bleach is generally not recommended for silk either unless the maker says it is safe.
- If yellowing persists, ask the retailer or a silk-experienced cleaner.
What never to use or mix
Avoid chlorine bleach, fabric softener, hot water and strong stain removers on silk. More importantly for your safety: never mix chlorine bleach with ammonia, vinegar or other acids, because this can release toxic gases. Do not combine different cleaners in one basin. Vinegar is sometimes suggested as a rinse for silk, but because some guides disagree on it, check the label, use it only in a dilute rinse with no other products present, and rinse well.
Keep detergents, basins and any cleaner out of reach of children and pets, and do not leave a basin of soapy water unattended.
How often to wash
Many care guides suggest washing silk pillowcases about every one to two weeks, and sooner if you use heavy hair or skin products or sweat a lot. A second case lets you rotate.
Why people choose silk pillowcases
Claims about silk pillowcases are mostly about comfort and smoothness: less friction on hair and skin, and a cool feel. Evidence for health or beauty benefits is limited, so treat marketing claims with caution. Silk is also more labor intensive to care for than cotton.
FAQ
Can I wash silk if it says dry clean only? Possibly, but it carries risk. Patch test and hand wash in cool water, or use a professional.
Can I use Dawn dish soap on silk? It is not recommended. Use a silk-safe detergent.
Can I put it in the dryer? No. Air dry.
What if my pillowcase is not pure silk? Satin made of polyester can often be washed more like a synthetic. See our general pillowcase cleaning guide and follow the label.