Anaplastology is a branch of medicine dealing with the prosthetic rehabilitation of the face or body. Professionals in the UK are termed Maxillofacial Prosthetists or Reconstructive Scientists and will have studied Dental Technology and Reconstructive Science for 6 years. Making a custom facial prosthesis is highly complex. You may have seen some amazing prosthetics that are used in the film industry, but these are applied over hours and worn for a day. We must will something that is its equal that you can wear daily for over a year and you can attach/detach in minutes.
Most prostheses are manufactured in a silicone elastomer (silicone rubber) that feels and looks very skin-like and will move with your face/body. It will replace the skin tissues that are missing and return the wearer some symmetry and privacy.