Question

What is perspiration, and how does it relate to your skin?

Answer 1

Perspiration, in short, is sweat.

Explanation:

Perspiration, or sweat, is made up of about 99% water, and 1% salt ions which might include potassium, sodium, and magnesium. It is our bodies way of regulating our temperature when we get too hot whether from external temperatures or physical activity.

What does sweat have to do with out skin? Sweat comes from our, get ready, sweat glands, which can be found within the dermis, and over most of the body. A small diagram in which you can locate the sweat gland at the bottom:
There are also multiple different types of sweat glands, located within different parts of the body, in which you can read up on if you'd like here