The subcutaneous layer is an important component of the skin (also known as the "integument", or "integumentary system").
“Subcutaneous” (or “sub-cutaneous”) is also an adjective used to mean “beneath the skin”. An example of "subcutaneous" used as an adjective is the term "subcutaneous injection" which refers to an injection into the sub-cutaneous layer of the skin.
To view the location of the subcutaneous layer relative to the other key components of the skin see the diagram of the structure of the skin. This may be of particular interest to students of courses in massage, reflexology, beauty therapies, and other health science or clinical courses.