What causes this? In this case these micro locs had never been interlocked. Palm roll had been the primary method of maintenance. Micro locs and sister locs are primarily maintained by interlocking because it helps the roots remain strong enough to support the weight of the ends of the locs. It helps with matting which happens really easy with very small locs. & it also helps the locs form and minimizes bulges and bunching. Palm rolling puts some tension on locs but traditional locs can withstan