Ever wonder why your hair feels knotty by morning? It’s usually just friction...

https://www.4shared.com/office/pcYDzaBAjq/pdf-88397-12006.html

Ever wonder why your hair feels knotty by morning? It’s usually just friction against your cotton pillowcase. Switching to silk minimises breakage, or try popping your hair into a loose braid to protect those ends while you sleep