I have long, thick, curly, dry hair. It knots a lot (often literally within hours of me washing and brushing it). Quite regularly I end up with bad knots that when untangled have fluff at the centre of them. My sister gets the same. Where does the fluff come from? How does it get in there? It's not like there's fluff lying around the house - so what is it?
NB in case others don't suffer this affliction - it's not like dust or something, it's like material fibres, the most recent fluff was blue.
Why?!