Lifespan varies, but as a general guide a silk pillowcase lasts about 1 to 3 years with normal use, and longer if you are careful with washing and drying. Key factors include momme weight (for example, 19 to 22 momme is often more durable than 16), fiber quality, seam and zipper construction, and your laundry routine.

Washing too hot, wringing, drying in direct sun or using a tumble dryer, and rough friction (for example, sharp nails, jewelry, or rough skincare residue) can shorten its lifespan. Using a laundry bag, a mild detergent, a low temperature wash, and air drying usually helps silk stay beautiful for the longest time.