Like the heart, stomach, and brain, your skin is an organ, something many of us don’t realise. In fact, it's the largest organ in your body, but it's still easy to take your skin for granted. Skin is made up of an outer layer, the epidermis, and a layer of soft tissue underneath called the dermis. Skin acts as a barrier to protect our body from the environment. It also regulates temperature and detects and fights off infections.