Before the teeth, the fingers, and the toes that make us human, there is but the humble embryo. Within that single embryo are three layers: the endoderm, mesoderm, and ectoderm, where our story begins. From that germ-rich goodness eventually comes the stuff of the nervous system, skin, and brain cells. Even once separated by muscle, bones, and other bodily goo, the brain-skin bond remains for life.
After all, the skin is quite literally the protective barrier between our internal being and the outside world; more poetically, the skin is the keeper of the soul. In many ways, the opposite is also true.
