Sugaki is drawing. The design is expressed to a painting style in cloth directly by a paintbrush or a widebrush which is soaked in a dye.
The design part which covered with wax is drawn carefully by a brush. In Sojo-zome (Sojo's dyeing) which dyes one design partially by several suitable techniques. In the last dyeing, a mistake isn't permitted in order to keep the dye from fading. And also a dye discolors by dryness, so that's assumed and compounded.