Your skin includes three layers known as epidermis, dermis, and fat. Some health issues, such as dermatitis and infections, can affect how these different layers work to protect your internal organs.

These cross-section images show three-dimensional human skin models made of living skin cells. Untreated model skin (left panel) shows a thinner dermis layer (black arrow) compared with model skin ...

The subcutaneous layer is the deepest skin layer. It protects a person’s body and keeps it warm. This layer also provides insulation and protection for vital tissues such as muscles, bones, and organs ...

Challenging the long-standing belief that fibroblasts produce skin collagen, researchers have investigated collagen formation in the 'glass-skinned' amphibian axolotl and other vertebrates. They ...

This article is part of our series about skin: why we have it, what it does, and what can go wrong. Read other articles in the series here. Our skin is a big deal – literally. It’s the largest organ ...

Your skin can change texture, and when it does, it’s really not that impressive. You might get goosebumps when you get cold. You might wrinkle your nose at a bad smell or stretch your lips into a ...