We spend a fortune on serums, yet we often wreck our hair while we sleep....

https://www.4shared.com/office/RJmubNyege/pdf-7073-15703.html

We spend a fortune on serums, yet we often wreck our hair while we sleep. Cotton pillowcases are surprisingly rough, causing endless friction that leads to morning frizz and those stubborn tangles you spend half an hour brushing out