Do you really want to do this? You just spent an hour or more just applying the makeup and making it look good, and in a short time, destroy what you've just done.
Depending on what was used, you can use oil- or water-based removers, cold cream, or just plain soap and water, to remove the makeup. Removal of the appliances, is something different.
Removal of an appliance with spirit gum, can simply be pulled off, CAREFULLY, or use spirit gum remover or rubbing alcohol. Removing one with pros-aide or medical adhesive, is more involved, and takes more time. You will need Bond-Off, Detachol, or in some cases, rubbing alcohol. Do NOT hurry the process. Use some q-tips, cotton balls, or related to help remove it. A full facial prosthetic can take about 30 minutes to remove. Some larger ones can take more time to remove. Start with the top of the appliance, and work your way down. Patience is the key here. You do not want to tear an expensive foam latex appliance. When boogi removes his appliance, it takes him about 20 minutes.