Mold?

So. My dreads are not smelling like wet dog or a wet towel, but right at the scalp my dreads are a little more thick and a little oily. They don't smell particular bad but, they smell... Well oily and a little like teatree oil, because all of my dread shampoos have teatree oil in em', though i always make sure to wash and dry my dreads completely, the drying part is a little hard though because i live in a cold and kinda rainy country with not much sun. Nevertheless,the other day when i seperated one of them by the scalp there was this grey-blue-green-ish stuff. It looked a little like fine dust or lint or something. But it still doesn't smell particular bad. Could this be mold, because then i should probably do something about it very soon.

Please help me, i do not want to cut of my hairy angels!

updated by @cil-bjerregaard-glund: 01/13/15 10:03:14PM

whats the shampoos u use do u use a green//blue towel or sheets

--
My new book Ban The Taboo Vol 1

Well most of my towels are red or dark blue and my sheets are Black, and i use dollylocks

why do i use dollylocks doesnt that site promote using wax? if so they should be boycotted too

could be lint from the towels and something else (u should avoid towels)

--
My new book Ban The Taboo Vol 1