I had a few dreads in my hair back in the surfer days. Had semi-natural ones lol, didn't wash my hair for a month or two then parts of it started knotting together. Used a bit of wax and a comb to exaggerate the knot. Because I was always in the sea, the salt water naturally tightened the dreads. They can look cool on some people but look DREADfull on others. Oh yeh, getting it professionally done in a salon (the best way) is really expensive. You gotta really commit to having them done but can be worth it in the end. PS once you have them/trying to get them, dont use conditioner!!! it softens your hair and starts to loosen the knots.