Threading*
Cotton, being an organic material, WILL rot over time and can cause mold growth. However, when a string is tied tightly around the dreadlock, it can cause weak spots in the dreadlock from holding the lock too tightly. Additionally, the string often “chokes” the dreadlocks causing the dreadlock above the string the hold excess moisture where it cannot as easily wick down the lock and out the end to dry properly after washing/getting wet. (See photo below for example.) For these reasons, we do NOT recommend threading and far prefer rubber bands in a situation where a client wants something placed at their roots to encourage locking.