Skin is the largest organ in your body.

Skin grows faster than any other organ. We keep renewing our skin our entire lives and it is important to understand how it works.

The biggest job of skin is to protect your body.

It is a tough, elastic, flexible, and waterproof coating that helps to protect your other organs and body parts from various things as germs, heat, cold, and sunlight.

Skin is made up of two layers.

The outer layer, of which you can see, is called the epidermis, the epidermis keeps producing new cells that push to the top of the skins surface and the layer below is called the dermis and is a fibrous tissue.

What you will find below the dermis is subcutaneous fat. Nerve cells in the skin make it sensitive to touch, pressure, and heat.

There are two main kinds of human skin;

Non-hairy skin (glabrous skin)

Non hairy skin (glabrous skin) is found on the palms of the hands and soles of the feet and is categorized by a thick epidermis with fingerprints (dermatoglyphics).


Hairy skin varies dependant on what body area, for example, the scalp versus the leg. On the fingers and toes, nails are created from the epidermis.

Oil glands (sebaceous glands) are found attached to hair follicles.

The sweat glands are located in the dermis with channel ducts going through the epidermis to the skins surface.

However there are specialized sweat glands called apocrine glands which are to be found in specific parts of the body, such as armpits and the groin.

These apocrine glands only develop after children have reached puberty.

Skin is one of the most complex organs in the body, besides having specialized sweat glands; there are nerves, blood vessels and muscles which are embedded in the skin.

The outer layer of skin is continually growing and the dead skin cells on the surface flake off - normally without you seeing them. This skin regenerating process normally takes about 52-75 days.

Some interesting facts on skin:

The average adult has 2 sq meters which weighs over 3.2 kg and has approximately 300 million skin cells.

On average each half a square inch of skin contains:

10 hairs
15 sebaceous glands
100 sweat glands
1 meter of tiny blood vessels

The skin is at its thickest on the palms of the hands and the soles of the feet, this varies between 1.2mm to 4.7mm.

Facial skin is approximately 0.12mm thick and on the general body area is about 0.6mm.

The thinnest layer of skin is on the lips and around the eyes.