What is skin?

Skin Care - What is Skin?

Skin Types



Part I

Part II

Aging and Wrinkles

Sun Protection

Tanning and Burning


Winter and Summer
Natural Ingredients
Get Perfect Skin
5 Natural Steps to Younger Skin

Shaklee skin care products for combination skin What is Skin?

You might be surprised to learn that you skin is your body's biggest organ.

When most of us think of bodily organs, what comes to mind most often are the heart, lungs and brain but NOT commonly the skin. Like these organs, and others inside the body, skin is made up of different types of tissues, which, in turn, are made up of cells.

Similar in function to the roof of a house, our skin plays an important role in protecting our bodies. It also keeps bodily fluids inside, while, carefully controlling the release of waste products from the body. It helps keep our internal body parts safe from the potentially harmful effects of the environment including the sun, light and bacteria and affords some protection from injury from external objects and events.

Several different layers make up the skin, but perhaps because the underlying layers are not visible, they're not thought of very often. We spend much of our lives worrying about acne and wrinkles but don't realize that these types of skin issues have a lot to do with the workings of the layers below.

If you were to look at a cross-section of skin, you'd see that skin consists of 3 different layers: the epidermis, the dermis and the hypodermis or subcutis layer. Let's take a closer look at each.


This is the outermost layer of you skin - it is the skin people see. It covers the entire body, from your head down to your feet. The epidermis itself consists of 3 layers and is made up of tightly-woven connective tissues of varying thickness. For example, the skin covering your feet is much thicker than that below the eye. The epidermis acts like a barrier, keeping the good in and the bad out.

The top layer of the epidermis is constantly being shed. It's the layer that acts as the gatekeeper keeping fluids in and dangers out. Although not easily visible, most of this layer is covered with thousands of tiny pores and hair shafts. New skin is continually being generated by the bottom layer to replace the skin that has been shed. The epidermis also contains melanin, the cells responsible for skin pigmentation (coloring) and protecting against the sun's damaging rays.


This layer of connective tissue tucked in between the innermost and outermost layers is the site of much activity. The dermis is home to blood vessels, lymph vessels, nerve tissue, hair follicles, bundles of collagen and sweat glands. Much activity happens in the middle layer. Blood vessels supply nutrients. Nerve tissues give skin the ability to feel. And the muscle tissues in this layer when they are activated are what cause a person to develop goose bumps in response to cold or fear. This layer also has the ability to trap bacteria that manages to penetrate the epidermis.

Hypodermis or Subcutis Layer

The innermost layer of skin helps to regulate our body temperature. It is here that insulating fat and collagen can be found which is why this layer helps keep us warm. This layer also acts as a cushion or shock absorber, protecting the body from injury. The connective tissue that makes up this important layer is also known as adipose tissue.
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Skin Care - What is Skin?
Page Updated 1:04 PM Wednesday, December 29, 2021
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