How Many Layers Of Skin Do I Have? (Sage Skincare Q&A)

Have you ever stopped to wonder, “How many layers of skin do I have?”

If you’re dealing with skin conditions like acne, scarring, fine lines, wrinkles, or other signs of aging, have you ever tried to think about which parts of your skin might be responsible for these issues?

Did you know that problems with different layers of skin can be treated differently?

If you’ve ever wondered about how your skin works or just what each of its layers really does, you’re in the right place.

In this article, we’ll teach you everything you need to know about your skin from the inside out. You’ll learn more about which layers are responsible for fat storage, which ones protect your body, and which ones contain collagen, too.

By the time you finish reading this article, you’ll never have to wonder about any of the qualities of your skin again. You’ll know exactly which layer you’re working with any time you treat your skin for issues and conditions.

So let’s get started!


Where is it located?: The outer layer of your skin. This is the part of your skin that you see on a daily basis, and it’s the one most people are familiar with. The epidermis is usually mistakenly referred to as just the skin itself, but actually, the skin is made up of several layers that work together.

how many layers of skin do i have

Physical Characteristics

  • Capable of regeneration. If you cut your skin, you don’t have a cut there forever; eventually, the cells will regenerate and repair themselves.
  • Made up of four layers. The outer layer is made up of dead cells and is the protective part of the epidermis. The next layer is the cell production area of the epidermis, and the bottom two layers help cells bond together and waterproof the skin.

Role as Part of the Skin

  • The epidermis is waterproof and keeps us from retaining water when we come into contact with it.
  • This part of the skin protects against germs, which is why it’s easier to get an infection when the skin is broken due to an injury or wound.
  • The epidermis is your body’s first line of defense against just about anything that could happen—from injury to illness and everything in between.


Where is it located?: Between the epidermis and the subcutaneous layer of your skin. This is the part of the skin you’ll most likely be dealing with if you’re treating your skin for ailments, conditions, and issues. Although there are some treatments that will focus on the epidermis, for the most part, you’ll be paying the most attention to the dermis layer.

layers of skin

Physical Characteristics

  • This is a very thick layer of skin that’s considerably thicker than the rest of the skin.
  • The dermis changes physically as we age, and this is the part of the skin that begins to sag or become less tight over time.
  • This layer is made up of elastic tissues as well as fibrous tissues.
  • The dermis is the flexible part of your skin that gives it elasticity.

Role as Part of the Skin

  • This part of your skin has two layers. The first of these layers contains connective tissues, collagen, capillaries, and elastic fibers.
  • The second layer of the dermis contains more collagen and elastic fibers as well as blood vessels, mast cells, fibroblasts, lymphatics, and nerve endings.
  • This part of your skin supports the epidermis. It helps you feel things, since this is where the nerve endings in your skin are located, and it’s also responsible for sweat production throughout your body.
  • Hair follicles are located in the dermis, and these are responsible for hair growth across your body as well.
  • The blood vessels that are located in the dermis help move waste through your body and deal with temperature regulation, too. These blood vessels will dilate and move closer to the surface of the skin when you’re hot, and they’ll contract and be less visible on your skin’s surface when you’re cold.


Where is it located?: Also known as the subcutaneous layer of the skin, the hypodermis is located between the dermis and the rest of the body—such as your internal organs and tissues. This is the most internal layer of your skin and is the last layer of defense your skin offers.

what are the layers of skin

Physical Characteristics

  • This layer is not as thick as the dermis, but still thick enough to act as a shock absorber.
  • This is a fatty layer of skin that is rarely seen unless you get injured deeply. It is buried deep beneath the other two layers and does its job “behind the scenes” for the most part.

Role as Part of the Skin

  • This part of your skin is where most of your body fat is stored. It’s made up of largely adipose.
  • The hypodermis keeps your skin attached to the rest of your body by bonding to the surface beneath it.
  • This layer of skin provides insulation against hot and cold as well, and although it doesn’t regulate temperature, it can help keep you from reacting to temperature changes too extremely.
  • If your skin is impacted in any way, such as during an injury or even when playing sports or exercising, it’s this layer that absorbs the shock and helps prevent you from becoming hurt too badly.


Do you feel like you’ve learned a little something about your skin? It can be challenging to get a firm grasp on the science behind how your skin works and what each layer really means, but it’s also important to have this information to ensure you know what you’re doing when it comes time to treat your skin for any issues or conditions it may have.

the layers of skin

For example, knowing that the dermis is the layer that contains collagen will help you understand why collagen must be administered in injections. On the other hand, knowing that the epidermis is where all your dead skin cells are located will help you understand why light therapy, laser therapy, and microdermabrasion can all help make your skin look healthier, younger, and more vibrant. The hypodermis isn’t usually involved in skin treatments, but since it is where fat is stored in your body, it’s still something you need to know about when you’re working on your overall appearance.

Knowing what each layer of your skin does and how it can help you is the first step toward taking better care of it. The more you learn, the easier it will be for you to practice healthy skin care and improve your appearance from the inside out. It may still take some time and effort to do so, but going into any type of skin treatment with knowledge and information to back you up is an important method of achieving the end goals you’re looking for. And besides, isn’t it always good to learn more about your body?


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