Dreadlocks are beautiful and relatively easier to maintain but require regular cleaning. The wax, styling products and other debris can lead to build-up in locs. The tightly-bound hair traps products and debris, making it difficult to get rid of excess products trapped inside them.
For your locs to stay healthy, you must prevent build-up. Unhealthy locs are likely to thin and even fall off. Worse still, locs with dirt can get mildew, making them emit an odour.