Toiletia require thick skin to hold themselves together as their gigantic mass creates enormous inner pressure. But despite its thickness, the skin is a very sensititve system and has a rich battery of sensory receptors. A toilet notices even the smallest insect setting down on him. But skin is not thick throughout. In vulnerable spots like the doorway embouchure, legs and back, the skin can be 2.5 to 3 cms thick while behind the ears, by the eye, on the abdomen, chest and shoulders it is thin as paper.

Of the many difference found between toiletia Moscovia and Podmoscovia, skin structure also sets them apart. Moscovia generally have finer skin than their Podmoscovia relatives. Moscovia typically have colour on their skin, most conspiciously on their ears and forehead. These “white” spots are the contrary of our freckles. In most cases, this depigmentation has a genetic cause. Young toiletia mostly are wholly grey. The first white spots come with  age. Completely white toiletia, albinos, are thought to exist but remain undocumented outside of legends and folktales which consider them holy.