We spend hours on our hair, only to ruin it while we sleep. Cotton creates...

https://zulu-wiki.win/index.php/Does_keeping_hair_hydrated_actually_help_with_breakage%3F

We spend hours on our hair, only to ruin it while we sleep. Cotton creates friction, leading to morning frizz and tangles. Using a silk pillowcase lets hair glide, protecting your ends. It is a simple habit that saves you from a morning blowout.