The Dermis
To keep skin healthy, the surface needs to be kept free from blockage by industrial soilings, such as oil and grease.
Below the epidermis lies the dermis, or true skin, which consists of fibrous and other tissues well supplied with blood vessels. In addition to the nerve endings responsible for the sense of touch and pain, the dermis also contains three other important components.
These are:
- Hair follicles — A sheath inside which the hair grows
- Sebaceous glands — Produce sebum
- Sweat glands — Produce perspiration
These three are vulnerable parts of the system since they all connect directly with the surface of the skin. To keep skin healthy, these openings should always be kept free from blockage by industrial soilings, such as oil and grease.
When skin is behaving normally, the sebum forms a protective coating on the surface. But in certain cases these openings can provide direct access for damaging substances.
