While this particular site is geared towards kids, it contains wonderfully easy to understand information:
“Your epidermis is the top part of your skin, and your skin is your body’s largest and fastest-growing organ. Skin is your body’s coat. It protects you. It helps you stay warm when it’s cold, and cool when it’s hot. Your skin keeps all your insides in, from your heart and lungs to your blood and muscles. And unless it’s cut or damaged, it keeps stuff out, including germs and water. You also feel things through the nerves in your skin.”
“Your skin grows really fast. Here are some cool facts about your skin and how it grows:
- You have a ton of skin cells. There are about 19 million skin cells in every inch of your body.
- New skin cells replace old ones. Your body is always making new skin cells and getting rid of old ones. Your body gets rid of 30,000 to 40,000 old skin cells every day! The skin you see now will be gone in about a month.
- Dead skin cells are on top. The top 18 to 23 layers of your skin are made of dead cells.
- New skin cells form at the bottom of the epidermis, which is the top part of your skin.
- Skin cells change shape. They start off kind of fat and square. Over time, they move to the top of the epidermis, flattening out as they go. When they get to the top, they flake off.”
Since we’re constantly growing new skin cells and shedding old skin cells, exfoliating your skin is an important part of having soft, smooth, sensitive skin.
Here are some great products that will scrub away those dead skin cells to leave you feeling fabulous:
“There are three main layers of the skin.
- Epidermis is the top layer of the skin, the part of the skin you see.
- Dermis is the second layer of skin. It’s much thicker and does a lot for your body.
- Subcutaneous fat is the bottom layer.
Layers of skin.
Your skin’s top layer, the epidermis, is super thin on some parts of your body (your eyelids) and thicker on others (the bottoms of your feet). The epidermis is the layer of skin in charge of:
- Making new skin cells: This happens at the bottom of the epidermis. The skin cells travel up to the top layer and flake off, about a month after they form.
- Giving skin its color: The epidermis makes melanin, which is what gives your skin its color (find out more about this in What gives skin its color?).
- Protecting your body: The epidermis has special cells that are part of your immune system and help you stay healthy.
A lot happens in the next layer, the dermis. The jobs of the dermis include:
- Making sweat: There are little pockets called sweat glands in the dermis. They make sweat, which goes through little tubes and comes out of holes called pores. Sweating keeps you cool and helps you get rid of bad stuff your body doesn’t need.
- Helping you feel things: Nerve endings in the dermis help you feel things. They send signals to your brain, so you know how something feels if it hurts (meaning you should stop touching it), is itchy or feels nice when you touch it.
- Growinghair: The dermis is where you’ll find the root of each tiny little hair on your skin. Each root attaches to a tiny little muscle that tightens and gives you goose bumps when you are cold or are scared.
- Making oil: Another type of little pocket, or gland, in your skin makes oil. The oil keeps your skin soft, smooth and waterproof. Sometimes the glands make too much oil and give you pimples. (See Acne: Pimples and Zits.
- Bringing blood to your skin: Blood feeds your skin and takes away bad stuff through little tubes called blood vessels.
The bottom layer of skin is the subcutaneous fat layer. This layer plays an important role in your body by:
- Attaching the dermis to your muscles and bones: This layer has a special connecting tissue that attaches the dermis to your muscles and bones.
- Helping the blood vessels and nerve cells: Blood vessels and nerve cells that start in the dermis get bigger and go to the rest of your body from here.
- Controlling your body temperature: The subcutaneous fat is the layer that helps keep your body from getting too warm or too cold.
- Storing your fat: This fat pads your muscles and bones and protects them from bumps and falls.”
All of the quoted info on this page was taken from https://www.aad.org/public/kids/skin.