Biosculpt was a set of procedures for artificial appearance change that was common in most of the more advanced civilizations of the Post Diaspora era. Extensive biosculpt, often indicated by unnaturally even and regular features, was especially common amongst the upper classes in many places and nearly universal in a few. (HHA4.1: PL) Berry Zilwicki and Ruth Winton had their looks altered with nanotech engineering biosculpt to pass as each other on their visit to Erewhon. (CS1)