We spend a fortune on products, but half the damage happens while we sleep....

https://wiki-dale.win/index.php/How_to_Save_Your_Hair_from_Becoming_a_Winter_Haystack_Overnight

We spend a fortune on products, but half the damage happens while we sleep. Cotton pillowcases cause friction, leading to that frizzy, tangled mess you wake up to. I have seen enough dry, broken ends at the salon to know small shifts make a difference