If this system failed, here are a few outcomes...
- Sweat is a part of homeostasis and when this layer doesn't exist you cannot excrete sweat. Therefore, you could not use this as a way to cool off.
- Without the skin, hair, and nails then viruses and bacteria could just get into your body easily!
- If there was no integumentary system or it failed rocks and other unwanted objects could get into your body.