Answer:
I can ruin your day, or darken your life. And while I'm expected, I'm never alright. I'm bad for business, and worse for your hair. Wherever I am, there's something not there.
It's usually found dried, but often kept slicker. Above another need, it's said to be thicker. What is it?
I can move even when you are still. I can be one or many.
It is a sound of empty, speak and it'll talk back plenty. But all the more you yack, you'll get the same words back.
What measures out time. Until in time all is smashed to it?
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?