dude, take that wax out. your dreads will never tighten completely with it in and it will eventually lead to mold. wash and scrub with really hot water. belive me, i had wax in my hair for a while and ever since i took it out, my dread have been doing better. spray your hair after you get it out.
You could, wouldn't be a problem. But that mixture incourages tangles and knots. But if you've got wax the hair won't be able to move freely to do that. So it would be somewhat futile...
quit wasting your money of stuff your hair doesn't need to natural dread. it'll dread by itself with a little time and patients