And we also have this within the hypodermis, within the subcutaneous layer. And together, our carotene, our collagen, as well as our elastin fibers give the skin strength and elasticity. And this is exactly what allows the skin to resist physical as well as mechanical pressures and forces. So basically, the skin ensures that our internal organs are well protected. For example, if we examine one particular important internal organ in our heart, the heart is not only protected by the sternum, bone and the ribcage. It is also actually protected by the layer of skin that exists on top of our sternum and ribcage.