Why does my curly 3a/3b hair turn into dreads when I don't wash it in 4 days or more ??

it just turns into really dry dreads when I don't wash it in 4 days or more . And it's usually in a bun when I'm home . 

2 Answers

My curls start to do the same thing if I go more that 3 days between washes, and I'm Caucasian. I think it's just a curly hair thing.
same