Silk pillowcase

A silk pillowcase is woven from silk fibers, most commonly mulberry silk, prized for its smooth surface and natural sheen. Its dense, tightly spun fiber structure conducts heat away from the skin quickly on contact, which is why it feels distinctly cool the moment your head touches it.

That coolness is mostly a surface sensation rather than active moisture management. Silk does not wick sweat away from skin the way a technical wicking fabric does, so it can still feel warm later in the night for someone who sweats heavily, even though the initial touch is cool. Many people choose silk pillowcases for hair and skin benefits as much as for cooling.

A common mistake is expecting a silk pillowcase alone to fix night sweats or general overheating, when it mainly addresses the cool-to-touch feeling similar to phase change fabric. Pairing a silk pillowcase with breathable sheets and a cooler bedroom gives a more complete result than relying on the pillowcase by itself.