Hey guys, so I've had this for a while now but I thought I should ask everyone here to make sure it isn't something bad. Anyway I've had this white stuff that on my scalp that really gross. Its not on my hair, but on my scalp and you can't really see it unless you look underneath a dread. I wash once a week with baking soda and tea tree and I'm beginning to wonder if its some sort of residue from the baking soda? Also, when it gets somewhat hot my scalp itches real bad. This isn't the case usually it only itches if I'm sweating (I don't know if that has anything to do with this).
I took a picture of it to show you what it looks like, though its pretty gross so beware.
Other than this, my hair isnt dirty and shows no signs of dandruff or anything like that. Any help would be very appreciated!