Home > Medical > Skin > How your skin works How your skin works All sections in Skin » About Skin » Age and Your Skin » Caring for your Skin » Eczema » FAQs » Health Tips » Healthy Hair » Skin News » Real-life Story » Seasons in the Sun » Skin Cancer » Your Skin and the Sun Find out how your skin works, discover how skin colour is defined by pigments in the skin and learn more about the human body's largest organ, skin. What skin colour means Skin colour and race have developed loaded meanings. But when a biological explanation is given for these historical labels, people can start moving away from misunderstandings. How your skin works Your skin regulates your body temperature, forms a physical barrier against injury and infection, and protects your internal organs. Here's how it works. Why your skin changes colour You can perk up pallor by slapping on self-tan or make-up, but your skin’s colour can also say much about your emotions and your state of health. Why your skin is the colour it is We’re all the same under the skin. But why is it that people from Europe, Asia and Africa all have skins of different colours? load more From our sponsor ADVERTORIAL: Treating bacterial skin infection ADVERTORIAL: What is a bacterial skin infection?