Our Skin Is Covered With Invisible Stripes

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Human skin is overlaid with what dermatologists call Blaschko’s Lines, a pattern of stripes covering the body from head to toe.

The stripes run up and down your arms and legs and hug your torso. They wrap around the back of your head like a speed skater’s aerodynamic hood and across your face. Or they would, if you could see them.

Source: Our Skin Is Covered With Invisible Stripes